By Kevin Cody | Founder & CEO, FLI Products / Mary Joan Isorena, Communications
Published: 09/05/2026
The Blade Guard™ 6-Inch Locking Knife Blade Edge Protector is designed for blades up to 6 inches long. FLI specifically identifies utility knives, boning knives, and fillet knives as key applications for this mid-range Blade Guard size.
A utility knife, boning knife, or fillet knife can move through very different environments—from a kitchen drawer or knife bag to a campsite, boat, tackle setup, cooler, or RV. Wherever the knife is stored or transported, keeping its cutting edge and tip covered can help separate the blade from surrounding objects.
For shoppers looking for the Clear 6-Inch Blade Guard, the product is available on Amazon.
Before selecting a guard, however, blade length needs to be considered alongside the knife's complete dimensions.
A knife with a 6-inch blade does not automatically fit simply because its length matches the number on the protector. Blade width, heel dimensions, thickness, curvature, and overall geometry can affect how the knife sits inside the guard.
FLI's fit guidance also identifies a maximum heel width of 1 3/8 inches for the 6-Inch model. That measurement applies specifically to the heel. It is not a universal maximum width for the entire blade, and FLI has not published a universal maximum blade-thickness specification for this model.
This guide explains how to evaluate those factors, how the Blade Guard 6-Inch works, and how it can be used for kitchen storage, fishing and boating, outdoor cooking, RV travel, and other supported storage and transport applications.
Key Takeaways
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The Blade Guard 6-Inch is designed for blades up to 6 inches long.
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FLI identifies utility knives, boning knives, and fillet knives as key applications for this size.
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FLI's fit guidance lists a maximum heel width of 1 3/8 inches.
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The 1 3/8-inch measurement applies specifically to the heel and should not be treated as a universal maximum overall blade width.
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FLI has not published a universal maximum blade-thickness specification for the 6-Inch.
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Blade length alone does not establish compatibility. Width, thickness, curvature, heel dimensions, blade profile, and overall geometry can also affect fit.
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The protector uses a fully enclosed hinged body, secure locking tabs, and dual rubber stops.
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Blade Guard helps reduce direct contact between a compatible cutting edge and surrounding objects during storage and transport.
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The product is made from BPA-free, food-safe polypropylene and is dishwasher safe.
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The Clear/Transparent version has a frosted/translucent appearance that allows the blade inside to remain visible.
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Supported applications include kitchen storage, knife bags, fishing, boating, camping, outdoor cooking, RV use, tackle bags, coolers, backpacks, and related travel situations.
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Blade Guard is Made in the USA.
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One Blade Guard is intended for one compatible knife.
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Customer experiences provide useful real-world context but are not universal compatibility tests.
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The Clear 6-Inch Blade Guard is available on Amazon.
Why Use a Blade Protector on a 6-Inch Knife?
A loose knife can come into contact with other knives, utensils, cooking equipment, or hard objects around it.
That can happen in a kitchen drawer, but it can also happen when a knife is carried in a bag, packed with camping equipment, stored in an RV, or transported with fishing and boating gear.
Direct contact with surrounding objects can contribute to nicks, chips, and dulling of a cutting edge.
An uncovered edge and tip can also create an unwanted point of contact when someone handles equipment around the knife.
The Blade Guard 6-Inch creates a physical enclosure around a compatible blade.
Instead of leaving the cutting edge and tip exposed, the knife is positioned inside the hinged protector before storage or transport.
Which Knives Is the Blade Guard 6-Inch Intended For?
The 6-Inch model is designed for knife blades up to 6 inches long.
FLI specifically identifies this size for:
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Utility knives
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Boning knives
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Fillet knives
Those categories make the 6-Inch an important middle option within the Blade Guard range.
It provides more blade-length capacity than the 4-Inch model used primarily for smaller knives, while serving a different group of knives from the longer 8-Inch and 10-Inch protectors.
But knife categories are only a starting point.
A utility knife can have a substantially different shape from a boning knife. A fillet knife may be relatively narrow and curved, while another knife of the same nominal length can be wider or thicker.
The question is therefore not simply:
"Is this a 6-inch knife?"
A more useful question is:
"Does this particular knife fit properly inside the Blade Guard 6-Inch?"
Understanding the 1 3/8-Inch Heel-Width Guideline
In addition to blade length, FLI provides a documented maximum heel-width guideline of 1 3/8 inches for the Blade Guard 6-Inch.
The heel is the portion of the blade nearest the handle.
This measurement is useful, but it needs to be interpreted correctly.
1 3/8 inches refers specifically to maximum heel width.
It does not establish that:
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every blade measuring 1 3/8 inches wide will fit;
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every part of a compatible blade can be up to 1 3/8 inches wide;
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blade thickness can be up to 1 3/8 inches; or
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every utility, boning, or fillet knife meeting the basic length and heel measurements will automatically fit.
FLI has not published a universal maximum blade-thickness specification for the 6-Inch.
The complete blade still needs to be considered.
How to Check Your Knife Before Choosing the 6-Inch
A practical fit check begins with the blade itself.
Measure the blade length
The Blade Guard 6-Inch is designed for blades up to 6 inches long.
Measure the blade rather than the total length of the knife including its handle.
If the blade is longer than 6 inches, it falls outside the stated blade-length guidance for this model.
Check the heel
Compare the heel with the documented 1 3/8-inch maximum heel-width guideline.
Look beyond the heel
Next, inspect the rest of the blade.
Ask:
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Does the blade become wider beyond the heel?
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Is it unusually thick?
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Does it have substantial curvature?
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Is the spine straight or strongly shaped?
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Does the cutting edge have a distinctive profile?
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Is there an unusual transition between the blade and handle?
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Can the complete blade sit properly inside the protector while allowing the guard to close and lock as intended?
This additional evaluation is especially important with the 6-Inch because utility, boning, and fillet knives can have very different physical profiles.
Why a Utility Knife and Fillet Knife Can Fit Differently
Knife fit is three-dimensional.
A utility knife and a fillet knife can both have 6-inch blades while looking very different from above and from the side.
A utility knife may have a relatively straight or broader profile.
A boning knife may be narrower with a distinctive curve.
A fillet knife can also be narrow, curved, and constructed differently from a typical utility knife.
Thickness can vary as well.
Those differences matter because Blade Guard closes around the actual blade, not around its product category.
FLI's 1 3/8-inch heel-width guidance provides an additional measurement for evaluating the 6-Inch model, but buyers should still consider the complete blade profile.
How Does the Blade Guard 6-Inch Work?
The Blade Guard 6-Inch uses a fully enclosed hinged polypropylene body.
Open the guard and position one compatible knife blade inside. Close the hinged body around the blade until the locking mechanism engages.
The design incorporates:
Fully enclosed body: Covers the edge and tip of a compatible knife when properly fitted and closed.
Secure locking tabs: Help keep the protector closed.
Dual rubber stops: Form part of the internal design and help keep a compatible blade positioned.
With the Clear/Transparent version, the frosted/translucent material allows the blade inside to remain visible without requiring the guard to be opened simply to identify the knife.
How Does Blade Guard Help Protect a Knife Edge?
A cutting edge can come into direct contact with other objects when a knife is stored loose.
Blade Guard places a physical barrier around a compatible blade.
That enclosure helps reduce direct contact with other knives, utensils, and hard objects that can contribute to nicks, chips, and dulling during storage and transport.
The fully enclosed design can also help reduce accidental contact with an exposed cutting edge.
These benefits should not be interpreted as absolute guarantees.
Blade Guard does not make a knife harmless, and careful handling and responsible storage remain necessary.
FLI has also not established a specific quantified increase in blade lifespan from using the product.
Using the 6-Inch Blade Guard in a Kitchen Drawer
Kitchen storage is one of the supported applications for Blade Guard.
For a compatible utility, boning, fillet, or similarly sized knife kept in a drawer, individually enclosing the blade helps separate its cutting edge from surrounding utensils and other hard objects.
It also means the sharp edge and tip are covered rather than left openly exposed when someone accesses the drawer.
The guard should still be used as part of responsible kitchen organization and knife-handling practices.
Carrying a 6-Inch Knife in a Knife Roll or Bag
Blade Guard is designed for both storage and transport.
A compatible knife can be enclosed before it is placed in an appropriate knife roll, bag, tote, or other storage system.
This provides individual coverage around the blade while the knife is being carried.
The outer storage system does not change the knife's dimensions. A blade that does not properly fit the 6-Inch guard will not become compatible simply because it is placed inside a knife bag.
Why the 6-Inch Is Particularly Relevant for Fishing and Boating
Among the Blade Guard sizes, the 6-Inch has an especially clear connection to fishing and boating because fillet knives are specifically identified as an intended application.
A fillet knife may travel between a home kitchen, boat, tackle bag, cooler, or another food-preparation location.
Enclosing a compatible blade before storage or transport helps keep the cutting edge and tip covered around other equipment.
FLI's 6-Inch product information also includes Capt. Colin McCarthy of Living on Island Time Fish Charter describing his experience using Blade Guard with a Dexter fillet knife.
That is an individual use example rather than a universal compatibility claim.
It does not mean every Dexter knife—or every fillet knife—will fit the 6-Inch.
Camping and Outdoor Cooking
Camping and outdoor cooking are also documented Blade Guard applications.
A compatible utility, boning, fillet, or similarly sized food-preparation knife can be enclosed before being packed with appropriate cooking equipment, a backpack, cooler, or other camping gear.
This can be useful when a knife moves between a home kitchen and an outdoor cooking location instead of remaining in permanent kitchen storage.
As always, fit comes first.
The individual knife needs to be compatible with the protector.
Using Blade Guard in an RV
RV storage presents another situation in which knives and surrounding items can move while traveling.
The Blade Guard 6-Inch can keep a properly fitted blade enclosed while the knife is stored.
It should still be used as part of an appropriate storage arrangement. Blade Guard does not replace the need to secure knives and other objects properly inside a moving vehicle.
Traveling With a Protected Knife
Blade Guard's supported applications include storage and transport situations involving travel, backpacks, tackle bags, cooler bags, camping, and RV use.
The protector can help keep a compatible blade enclosed while it is being carried.
However, using a blade protector does not determine whether possessing or transporting a particular knife is permitted.
Always follow applicable laws and the rules of airlines, transportation providers, workplaces, parks, campgrounds, venues, and other destinations governing knife possession and transport.
What Can Customer Experiences Tell You?
Customer feedback can provide useful context about how Blade Guard products are used outside of controlled product descriptions.
Across available Blade Guard customer experiences, users have discussed:
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secure fit and closure;
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drawer storage;
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knife transport;
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RV storage;
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blade protection; and
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rubber components that help keep blades positioned.
These experiences can help illustrate potential uses, but they have limitations.
Blade Guard customer feedback covers multiple sizes. An experience involving an 8-Inch or 10-Inch model does not establish that a particular knife will fit the 6-Inch.
Likewise, one customer's successful experience with a particular knife does not establish compatibility for every knife of the same category or brand.
Reviews are individual experiences—not universal sizing specifications or controlled compatibility testing.
What Is the Blade Guard 6-Inch Made From?
The Blade Guard 6-Inch is made from BPA-free, food-safe polypropylene and incorporates dual rubber stops into its design.
It is also dishwasher safe, providing a convenient cleaning option after kitchen or outdoor food-preparation use.
Blade Guard is Made in the USA and manufactured in Rockfall, Connecticut by The Rogers Manufacturing Company, a family-owned American plastic injection molding manufacturer.
What About Blade Guard Colors?
The broader Blade Guard 6-Inch assortment currently includes:
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Transparent
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Grey
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Blue
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Khaki
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Yellow
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Black
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Red
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Orange
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Green
The Amazon product page used for this guide is specifically for the 6-Inch Clear Blade Guard.
The Clear/Transparent version has a frosted/translucent appearance that allows the blade inside to remain visible while the guard is closed.
The broader FLI assortment should not be interpreted as a claim that Amazon offers every Blade Guard color.
For current Amazon selection and availability, check the Blade Guard 6-Inch product page on Amazon.
One Blade Guard Is for One Compatible Knife
Each individual Blade Guard is intended to cover one compatible knife.
If several knives need individual blade coverage, each should have its own appropriately sized protector.
The 6-Inch model should not be used to hold multiple knife blades simultaneously.
When Should You Consider Another Blade Guard Size?
Blade Guard is available in 4-inch, 6-inch, 8-inch, and 10-inch sizes, along with a multi-size Chef's Set.
The 6-Inch is particularly associated with utility, boning, and fillet knives.
When evaluating this size:
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Measure the blade.
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Confirm that the blade does not exceed 6 inches.
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Check the heel against the documented 1 3/8-inch maximum heel-width guideline.
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Evaluate the width and profile of the rest of the blade.
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Consider blade thickness.
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Look at curvature and overall blade shape.
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Confirm that the blade can sit properly inside the protector so the guard can close and lock as intended.
If the blade exceeds the stated length guidance, another Blade Guard size should be considered.
The correct size is determined by the actual knife rather than simply choosing the largest available protector.
Who Should Consider the Blade Guard 6-Inch?
The 6-Inch model is relevant for people who need individual blade coverage for compatible knives up to 6 inches long.
Potential users include:
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Home cooks storing compatible knives in drawers
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People using utility knives for food preparation
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Users of compatible boning knives
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Anglers using compatible fillet knives
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Boat owners and fishing charters
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Campers and outdoor cooks
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RV owners
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People transporting compatible knives in appropriate bags, tackle bags, coolers, backpacks, or other storage systems
The activity does not establish compatibility.
The individual knife still needs to fit.
Frequently Asked Questions
1. What does "6-Inch" mean?
The Blade Guard 6-Inch is designed for knife blades up to 6 inches long. The measurement refers to the blade rather than the total length of the knife including its handle.
2. Which knives is the Blade Guard 6-Inch designed for?
FLI specifically identifies utility knives, boning knives, and fillet knives for the 6-Inch model.
Individual compatibility still depends on the knife's actual dimensions and geometry.
3. Will every knife with a 6-inch blade fit?
No.
A blade measuring 6 inches or less satisfies the basic blade-length guidance, but heel width, blade profile, thickness, curvature, and overall geometry can also affect fit.
4. What is the maximum heel width?
FLI's fit guidance lists a maximum heel width of 1 3/8 inches for the 6-Inch model.
5. Does 1 3/8 inches mean the entire blade can be that wide?
No.
The 1 3/8-inch measurement applies specifically to maximum heel width. It should not be treated as a universal maximum-width specification for the entire blade.
6. What is the maximum blade thickness?
FLI has not published a universal maximum blade-thickness specification for the 6-Inch model.
Thickness can still affect fit.
7. Can I use the Blade Guard 6-Inch with a utility knife?
Yes, if the individual knife fits properly. Utility knives are specifically identified as an application for the 6-Inch model.
8. Can I use it with a boning knife?
Yes, provided the individual boning knife is compatible.
9. Can I use it with a fillet knife?
Yes, if the individual knife fits. Fillet knives are specifically identified as an application for this size.
10. Does Blade Guard cover the cutting edge and tip?
When a compatible knife is properly fitted and the guard is closed, the hinged design encloses the blade edge and tip.
11. Does the 6-Inch Blade Guard lock closed?
Yes. The design uses secure locking tabs and dual rubber stops.
12. Can I use it in a kitchen drawer?
Yes. Kitchen drawer storage is a supported application.
13. Can I put it in a tackle bag or cooler?
Yes. Tackle bags and coolers are among the supported applications, particularly for fishing and boating use.
The knife still needs to fit the 6-Inch protector properly and be stored appropriately.
14. Can I use it while camping?
Yes. Camping and outdoor cooking are supported applications.
15. Can I use Blade Guard in an RV?
Yes. RV storage and travel are supported Blade Guard applications.
16. Does Blade Guard guarantee that I cannot accidentally cut myself?
No.
The enclosed design helps reduce accidental contact with an exposed blade when appropriately used, but careful knife handling and responsible storage remain necessary.
17. Does Blade Guard guarantee that my knife will stay sharp longer?
No specific blade-life increase has been established.
Covering a compatible blade helps reduce direct contact with other knives, utensils, and hard objects that can contribute to nicks, chips, and dulling during storage and transport.
18. Is the Blade Guard 6-Inch dishwasher safe?
Yes.
19. Is it BPA-free and food-safe?
Yes. The Blade Guard 6-Inch is made from BPA-free, food-safe polypropylene.
20. Can I see the knife through the Clear version?
The Clear/Transparent version has a frosted/translucent appearance that allows the blade inside to remain visible without opening the guard simply to identify it.
21. How many knives fit inside one 6-Inch Blade Guard?
One compatible knife.
22. Is the Blade Guard 6-Inch Made in the USA?
Yes. Blade Guard is Made in the USA and manufactured in Rockfall, Connecticut by The Rogers Manufacturing Company.
23. Is the Blade Guard 6-Inch available on Amazon?
Yes. The Clear 6-Inch Blade Guard is available on Amazon.
Amazon selection and availability can vary, so check the Amazon product page for current availability.
Is the Blade Guard 6-Inch a Good Match for Your Knife?
The Blade Guard 6-Inch is designed for blades up to 6 inches long, with utility, boning, and fillet knives among its primary applications.
That makes blade length the logical first measurement—but not the final one.
Check the knife's heel against the documented 1 3/8-inch maximum heel-width guideline. Then look at blade thickness, width, curvature, profile, and overall geometry.
If the individual knife falls within the applicable sizing guidance and sits properly inside the protector, the Blade Guard 6-Inch provides a fully enclosed, locking option for keeping the blade covered during kitchen storage and transport, including supported fishing, boating, camping, outdoor-cooking, and RV applications.
Where to Buy the Blade Guard™ 6-Inch
The Clear Blade Guard™ 6-Inch Locking Knife Blade Edge Protector is available on Amazon.
For current online availability, product information, and purchasing options, visit the Blade Guard 6-Inch product page on Amazon.
Shop the Blade Guard™ 6-Inch on Amazon:
https://www.amazon.com/Agilux-Protector-Storage-Transport-Protects/dp/B0932BNFP5/ref=ast_sto_dp_puis
Protect Your Utility, Boning, and Fillet Knives at Home or on the Go
If you have a compatible utility knife, boning knife, fillet knife, or another appropriately sized blade, the Blade Guard 6-Inch provides a fully enclosed, locking option for keeping the blade covered during storage and transport.
Start with blade length, check the heel-width guidance, and consider the complete physical profile of your knife before deciding whether the 6-Inch is the right fit.
Shop the Clear Blade Guard™ 6-Inch on Amazon:
https://www.amazon.com/Agilux-Protector-Storage-Transport-Protects/dp/B0932BNFP5/ref=ast_sto_dp_puis
About Kevin Cody
Kevin Cody | Founder & CEO, FLI Products
Kevin Cody is the Founder and CEO of FLI Products and a product development, merchandising and retail industry veteran with more than 20 years of experience. His background includes merchandising leadership at The Home Depot as well as developing, sourcing, manufacturing, marketing and bringing consumer products to market through major retailers and online marketplaces.
Kevin works directly with manufacturers, inventors, retailers and consumers to develop practical products that solve everyday problems. His experience spans product design and development, retail merchandising, manufacturing, e-commerce, marketplace strategy and consumer product education.
Through the FLI Products Learning Center, Kevin shares practical, experience-based information designed to help consumers better understand products, solve problems and make informed purchasing decisions.
Read Full Bio: https://www.fliproducts.com/pages/meet-the-founder-kevin-cody
About FLI Products
FLI Products develops and markets practical consumer products designed to solve everyday problems at home, outdoors and on the job. Working directly with manufacturers, inventors and retailers, FLI Products focuses on thoughtful product design, practical functionality and useful solutions for consumers. Its products are available through FLIProducts.com and select major retailers and online marketplaces.
About FLI Products: https://www.fliproducts.com/pages/about-fli-products-company-values-and-mission
Sources & References
FLI Products — Blade Guard™ 6-Inch Locking Knife Blade Edge Protector
https://www.fliproducts.com/products/blade-guard-6
FLI Products — Blade Guard Knife Protection Hub
https://www.fliproducts.com/pages/blade-guard-hub
FLI Products — Knife Blade Guards for Safer Storage and Longer Lasting Blades
https://www.fliproducts.com/blogs/blade-guard/knife-blade-guards-for-safer-storage-and-longer-lasting-blades
FLI Products — The Ultimate Guide to Blade Guard
https://www.fliproducts.com/blogs/news/the-ultimate-guide-to-blade-guard-protecting-your-knives
FLI Products — Blade Guard Made in USA / Rogers Manufacturing
https://www.fliproducts.com/blogs/america250-made-in-usa/america250-blade-guard-made-in-usa-rogers-manufacturing
Amazon — Blade Guard 6-Inch Locking Kitchen Knife Blade Protector
https://www.amazon.com/Agilux-Protector-Storage-Transport-Protects/dp/B0932BNFP5/ref=ast_sto_dp_puis?th=1
More Blade Guard Resources: Blade Guard Hub | Shop All Blade Guard
