#1 Home Improvement Retailer

Internet #100000053

Model #10-099

Store SKU #184861

6 in. Classic Retractable Utility Knife

  • Three-position retractable blade provides versatility
  • Steel, interlocking nose securely holds blade
  • Storage in handle holds up to 3 replacement blades
  • See More Details

Frequently Bought Together


Product Overview

The Stanley Classic Retractable Blade Knife is designed to cut cardboard, foam, balsa wood and other materials. Durably made with steel for strength, it features an interlocking nose that joins the knife halves in order to secure the blade, providing knife stability. The knife comes with three heavy-duty utility blades that can be safely stored in the handle for convenience.
  • Includes handle and 3 heavy-duty metal utility blades
  • Handle crafted with steel for lasting durability
  • Easily cuts a variety of materials including cardboard boxes and foam
  • Interlocking nose holds blades securely for safe operation
  • Retractable blade design ensures safety when not in use
  • 3 replacement blades can be stored in handle
  • Classic utility knife design

  • California residents

Info & Guides

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6 in. Classic Retractable Utility Knife
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Name6 in. Classic Retractable Utility KnifeFASTBACK Compact Folding Utility Knife with General Purpose BladeRetractable Utility KnifeSlide-Out Utility Knife with General Purpose Blade Storage
Knife TypeUtility KnifeUtility KnifeUtility KnifeUtility Knife
FeaturesBlade Storage,Retractable BladeFolding Handle,Lockable Blade,Removable BladeRemovable BladeFolding Handle,Lockable Blade,Removable Blade
Hand Tool TypeUtility KnifeUtility KnifeUtility KnifeUtility Knife
Blade Length (in.)2.5 in1.27 in2.43751.2 in
Handle MaterialSteelPlasticComfort GripMetal
Blade MaterialCarbon SteelSteelSteelSteel
Blade Width (in.)0.625.02.0240.7500
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Blade Length (in.)
2.5 in
Blade Width (in.)
Handle Length (in.)
Product Depth (in.)
8.1 in
Product Length (in.)
6 in
Product Width (in.)
3 in


Blade Edge Type
Straight Edge
Blade Material
Carbon Steel
Blade Storage,Retractable Blade
Hand Tool Type
Utility Knife
Handle Material
Knife Type
Utility Knife
Lock Type
Lock Back
Number of Pieces
Product Weight (lb.)
Replacement Blade Type
Utility Knife Blades
Tools Product Type
Hand Tool

Warranty / Certifications

Manufacturer Warranty
Limited lifetime

Questions & Answers


how do I get this to work? The blade isn't already loaded? Do I have to unscrew it first?

Asked by atlcharm April 11, 2018

Remove the screw on the slide and the two outside pieces of parts of the knife can be disconnected. Once the knife is open, you will see where the knife blade goes.

Need instructions on how to change blade

Asked by Dmach September 14, 2017

Anyone who has to ask this should not be allowed to touch a box cutter

How do I put together my box cutter

Asked by Shawnna November 9, 2016

This is a utility knife, not a box cutter. It should be assembled when you purchase it. If not, have a man show you.

how do I load a blade

Asked by shaun007 December 13, 2014

The blade comes pre-loaded in the retractable slider from the factory, and it's ready to use. To replace the blade, just remove the single screw and the separate the 2 metal halves of the handle. Lift up the slider assembly and you can insert in another blade. Also remember the blades are double-ended, so you can flip it around once for fresh edge before disposing. Spare blades come or can be be stored in the handle too.

Customer Reviews

  • 4.4
    out of 107 reviews
  • 86% recommend this product
Filter by:
Showing 1-10 of 107 reviews
blade does not fit correctly into carrier
As was pointed out in several other reviews, the included blades do not actually fit into the carrier correctly. I assume that the carrier was designed for blades that are a little narrower than the ones that are included nowadays. It is actually possible to force the blade into the carrier using pliers (i used some vice grip style I had handy), and once you have it seated it is possible to reassemble the knife. However, I would bet money that the edge on the other half of the blade (the part that you have to force into the carrier) is ruined. I do not look forward to the process of removing the blade from the carrier once it is too dull to use.
by Bob
Response from SBD_Product ExpertMay 13, 2020
Thank you for providing your feedback. Your feedback will help us to better our current and future products. Please contact Customer Support at WECARE@sbdinc.com if you have any additional questions or concerns that we may assist you with.
Thank you
Great knife
I'm a fridge delivery guy and this knife cuts through the thick packaging box like butter. Made my work fast and easier. It is safe and build to last.
by Aidil
These have been my favorite utility knives by far, until now. I recently bought 2 of these. One ...
These have been my favorite utility knives by far, until now. I recently bought 2 of these. One of these knives works good but has globs of paint on the top of the cutting end (not a big deal). The other one has a slide that will not accept its own blades (big deal). I also noticed a small flaw in the cast of the handle (not a big deal). Comparing these 2, I found the date of the castings to be different as well as the castings. Some of these are major differences. So, I decided to compare all my Stanley Classic 99's knives, new and old. The new ones have a very thin casting, and less contour giving them a different grasp in the hand (a poorer grasp). The older knives have a thicker casting, more of a contour, a better grip, and they have never disappointed me. Stanley needs to go back to previous manufacturing methods on the casting, the slide, and the paint.
by TanksAlot
8 people found this helpful
Stanley did it again !!
Everytime I visit my local Home Depot, I always seem to gravitate to the utility knives in the tools section of the store. I have always admired the design of the Stanley Classic 99 (Model No. 10-099). The handle feels so super smooth in the hand, is not as big or bulky as some others with the blade offering 5 retractable positions. Some very important highlights are: * Smooth handle with a slender profile offering a comfort grip * Extra blade storage inside handle * Screw locking design prevents the blade from popping out during heavy-duty cutting tasks What has always attracted me to this particular design is the minimalist appeal. Other fancy utility knives compete for your attention by offering gee-whiz features such as quick blade change or some fancy way they fold (and that's fine to add to your collection). This knife does not attempt to wow you with that. What this offers is simplicity in itself. I've seen many interesting designs over the decades of my life and love them so much! If I were to summarize this review in just two words it would simply be, "nothing fancy"! Recommended: Highly Rated for everyone (who enjoys the pleasure of such a classic utility knife)
by TechTalkGuy
25 people found this helpful
Great utility knife
This is a great retractable utility knife. It's lighter in weight, nicely sized, and it works great. I feel much safer now that I have this utility knife, I know that it is well made and durable, and that when it comes to Stanley brand tools- safety isn't ever compromised for the sake of saving a few dollars. This is a great quality, long lasting, durable and tough utility knife! I would absolutely buy this again and would recommend it to others! Absolutely check this out!
by Alez2466
The blade locked in place with ease!
I putchased this box cutter to do a crafting project with my son for his school. I often have issues with these because I end up breaking the blade or the portion of the cutter that pushes the blade up. However, I had none of these issues with my Stanley box cutter. The quality is fantastic. It glided through cardboard, ribbons, and even plastic. The handle was very easy to grip amd the box cutter was so reasonably priced it was almost a steal. If you haven't tried this Stanley 6in box cutter than you should. It most likely will be the last one you have to buy!
by Little Red Riding Hood
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
The first item sent was a fixed knife, not retractable....
The first item sent was a fixed knife, not retractable. I had to drive to the store to replace it, but once there they were very polite and took care of the problem.
Easy to use. Very durable. Will buy again...
Easy to use. Very durable. Will buy again
Makes my life cutting through cardboard boxes to fit them...
Makes my life cutting through cardboard boxes to fit them in my recycling can a piece of cake! Great precise tool.
Showing 1-10 of 107 reviews