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Stanley 10-778L Fatmax Retractable Knife

4.2 4.2 out of 5 stars 387 ratings
$13.36
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Purchase options and add-ons

Brand Stanley
Color Yellow
Item Weight 0.28 Pounds
Style Ergonomic
Handle Type Manual-Retractable

About this item

  • Blade wiper removes excess dirt and protects knife.
  • Blade clamp eliminates blade wobble and gives more control.
  • Ergonomic design for ease of use with soft touch panels/grips allow better control and less slips
  • Pop-up blade dispenser for easier and faster blade changes
› See more product details

Customer ratings by feature

Value for money
4.3 4.3
Ergonomic
4.2 4.2
Sturdiness
3.8 3.8
Easy to use
3.5 3.5
See all reviews

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Product information

Technical Details

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Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Stanley 10-778L Fatmax Retractable Knife

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Product Description

Product Description

The Stanley 10-778 FatMax Retractable Utility Knife is a rugged, yet comfortable with an ergonomic design, soft-touch grips for control, and a pop-up blade dispenser for easy access and fast tool-free blade changes. Its blade clamp helps eliminate blade wobble for precise cutting, and a blade wiper removes excess dirt and debris which helps to protect the knife. The 10-778 FatMax Utility Knife also offers soft touch grips for control. This is an indispensible tool for your toolbox, shop cabinet, workbench, or tool belt.

From the Manufacturer

FatMax retractable utility knife. Ergonomic design for comfort during use. Blades pop up on dispenser for ease when changing blades. Knife comes with FatMax blades. Knife opens up easily for blade change. High visibility yellow color makes knife easy to identify among other tools.

Customer reviews

4.2 out of 5 stars
4.2 out of 5
387 global ratings

Customers say

Customers like the quality and ease of changing blades of the utility knife. For example, they mention it works well, has a good grip and that the blades are easy to change. That said, some complain about the ease of removal. Opinions are mixed on ease of use and appearance.

AI-generated from the text of customer reviews

54 customers mention41 positive13 negative

Customers like the quality of the utility knife. They say it's well-made, works well, and is a great tool for their shop. Some say that it'll last for several years without any problems.

"...grease applied to the blade sliding area on the inside, and it works very smoothly." Read more

"Stanley 10-778 Fatmax Retractable Knife This stout and sturdy retractable knife is my BEST FRIEND!..." Read more

"Well designed and mfg. Big difference over cheap utility knives. Quality.. Worth the extra $ to me. Keep those cheap tools...." Read more

"Terrible product. When pushing the blade advance button the blade carriage would rock in it's track in the knife body and lose it's tracking...." Read more

10 customers mention10 positive0 negative

Customers find the blades of the utility knife easy to change. They mention that the rubber panels make blade storage easy.

"Very ergonomic and super easy to switch out the blades. I use these in all my shipping hubs and wouldn't use another." Read more

"...Blade changes are a snap with this, but you have to read the directions - it's not like any other utility knife. It feels great in your hand...." Read more

"...Keep those cheap tools. I feel much safer using. Very EASY blade changes." Read more

"...I love these because the blades are sooo easy to change...." Read more

6 customers mention6 positive0 negative

Customers like the blades of the utility knife. They like that it stores extra blades within the handle and comes with extra blade. They also like the grip and the built-in blade holder.

"...I also like the grip and the built in blade holder.I purchased three of these and did run into a quality control issue on one of them...." Read more

"...It’s extremely quick to change out a blade and you can store a bunch of extras right inside the handle without having to get out a screwdriver to..." Read more

"...I like that it stores extra blades within the handle and comes with the extra blades." Read more

"Works exactly as advertised. Two thumbs up. Love the way spare blades are stored on this model. I would buy it and recommend it to friends." Read more

6 customers mention6 positive0 negative

Customers like the grip of the utility knife. They mention it has a good grip and is comfortable.

"...I also like the grip and the built in blade holder.I purchased three of these and did run into a quality control issue on one of them...." Read more

"...Between the ergonomics of the bend, the grip of the rubber panels, the ease of blade changing/storage, the whole package, this one is it...." Read more

"This knife works well. Good grip. My only issue is that it's not easy to change blades. Instructions of no help...." Read more

"I like the comfortable grip and the angle of the blade. Switch the supplied blades to bi-metallic blades..." Read more

23 customers mention12 positive11 negative

Customers are mixed about the ease of use of the utility knife. Some mention it's very ergonomic and easy to switch out the blades, while others say that it'd be ridiculously difficult to use and the directions are vague at best.

"Very ergonomic and super easy to switch out the blades. I use these in all my shipping hubs and wouldn't use another." Read more

"...Finally got that free then could not load a blade. It would not work. Then opening the blade storage compartment was way to hard...." Read more

"...It feels great in your hand. A touch of grease applied to the blade sliding area on the inside, and it works very smoothly." Read more

"They plug up pretty easily and are incredibly difficulty to disassemble...." Read more

7 customers mention3 positive4 negative

Customers are mixed about the appearance of the utility knife. Some mention that it's nice looking and useful, while others say that it has a poor design and is not up to Stanley's standards.

"Really poor quality. Not up to Stanley's standards...." Read more

"Good Utility knife with a nice bright color easy to find!" Read more

"poorly design retractable utility knife. The blade is lose when attached to the unit, making it difficult to use...." Read more

"Nice looking, but really the same old...." Read more

18 customers mention0 positive18 negative

Customers find the blade of the utility knife to slide out easily when they try to cut anything hard. They also say that removing the blade is very difficult, and the broken blade keeps falling out. Some customers also mention that the blade was loose when attached to the unit, making it difficult to use.

"...Removing the blade was very difficult and I couldn't insert a new one...." Read more

"...lock into the handle, but every time I cut cardboard, the blade comes out of the holder. This is not safe...." Read more

"This box cutter was impossible to operate. It had a hard to remove card with instructions practically made into the thing...." Read more

"...The knife blade itself seems to become dis-engaged and sometimes falls out. That isn't helpful when you want to apply some good downward pressure...." Read more

5 customers mention0 positive5 negative

Customers are not satisfied with the safety of the utility knife. They mention that the blade won't stay in, the knife runs freely, and that the razor loading monster is both dangerous with the possibility of sliced fingertips.

"...This is not safe. After several years of use, my older Fatmax started doing that, and that's why I purchased a new one...." Read more

"...easily bends, after which point the blade runs freely and the knife is dangerous...." Read more

"...Quality screwdrivers and measuring tapes. But this razor loading monster is both dangerous with the possibility of sliced fingertips and a..." Read more

"This thing is garbage at best. Very unsafe especially putting any kind of pressure on the blade, it will pull out. Directions are vague at best...." Read more

Reason why your cutter doesnt work, excellent cutter though
5 Stars
Reason why your cutter doesnt work, excellent cutter though
Product problem/defect Explained!! Why are some purchasers are having problem?? See photo.It is THE PACKAGING. Remove that plastic by making a clean cut in it otherwise it will get caught in the mechanism so you will have to open up the whole thing and put it back together . BE CAREFUL and do not yank that plastic off. I did this and it was not fun putting it back together.
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Top reviews from the United States

Michael Crowe
5.0 out of 5 stars Great box cutter.
Reviewed in the United States on June 17, 2023
Verified Purchase
Very ergonomic and super easy to switch out the blades. I use these in all my shipping hubs and wouldn't use another.
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John Thoren
5.0 out of 5 stars great ergonomics and build quality
Reviewed in the United States on October 8, 2019
Verified Purchase
Removing the packaging is the only downside - it's ridiculously difficult. Blade changes are a snap with this, but you have to read the directions - it's not like any other utility knife. It feels great in your hand. A touch of grease applied to the blade sliding area on the inside, and it works very smoothly.
Helpful
 Report
Heather K. Tracy
5.0 out of 5 stars Sturdy, Easy to Use, Onboard Storage - I love my Fatmax!
Reviewed in the United States on June 16, 2017
Verified Purchase
Stanley 10-778 Fatmax Retractable Knife  This stout and sturdy retractable knife is my BEST FRIEND! I have two of 'em, and would be forlorn if ever they were to disappear...I use mine every single day, and have for years. I'm lazy, and the onboard storage caddy makes it simple for me to do the right thing and switch out my blade before it becomes so dull that tragedy looms. Thanks for making my life easier, and producing a knife that I reach for all day long!
Helpful
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Mc2128
1.0 out of 5 stars Sticks when trying to advance blade
Reviewed in the United States on May 11, 2023
Verified Purchase
Terrible product. When pushing the blade advance button the blade carriage would rock in it's track in the knife body and lose it's tracking. As a result the tip of the blade would jam on the inside edge of the blade opening of the knife body. You have to push and wiggle around the button and/or push it back and forth to get the blade to advance. Over all resulting a delay in using the knife as intended. In simple terms, you have to mess with it to get it to work. I eventually took it apart and filed a section of the body to make a sort of ramp so the tip of the blade wouldn't jam while trying to advance the blade.
That somewhat fixed the issue. Now instead of the blade being jammed 90% of the time it jams 30% of the time. I think the noob designer(s) of this product needs a through dress down. Perhaps Stanley has lost sight of who they are and the principles they were founded on. It seems to me they have designers working for them that are more into having a product look "cool" then one that functions reliably. I suggest Stanley start making it mandatory that their designers actually be experienced in utilizing the tools they are tasked with designing. Because I feel it's evident the team that worked on this knife have been wrongfully collecting a check from Stanley under the false pretenses that they had any talent, common sense, or understanding of tool and die making.
2 people found this helpful
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Amazon Customer
5.0 out of 5 stars Good quality product.
Reviewed in the United States on August 30, 2021
Verified Purchase
Well designed and mfg. Big difference over cheap utility knives. Quality.. Worth the extra $ to me. Keep those cheap tools. I feel much safer using. Very EASY blade changes.
One person found this helpful
Helpful
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CQCoder
4.0 out of 5 stars Love these blades!
Reviewed in the United States on May 14, 2017
Verified Purchase
I'm a huge fan of these blades. This is an update to their original silver model and, thankfully, is an update without one of those 'crap, why did they remove that' feelings.

I love these because the blades are sooo easy to change. I can't stand a dull blade and having to stop and unscrew them to change this is simply annoying. Here, a quick press and you can reverse the bald or swap in a new one.

I also like the grip and the built in blade holder.

I purchased three of these and did run into a quality control issue on one of them. Removing the blade was very difficult and I couldn't insert a new one. I took it apart to see if I could fix it - the frame that holds the blade was just a bit too tight to let it slide past and lock in. I tried prying it wider but finally just game up and toss the bad one.

I'm hoping this is just a glitch and not something that has happened in redesign. I've given these gifts in the past - gone through probably six of them with out a bad one (the older style).
4 people found this helpful
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Ryan
5.0 out of 5 stars My favorite utility knife.
Reviewed in the United States on January 5, 2019
Verified Purchase
What can I say other that this is the best utility knife ever made. It’s extremely quick to change out a blade and you can store a bunch of extras right inside the handle without having to get out a screwdriver to open everything up. Also, it’s yellow so you can easily spot it if you are like me, always forgetting where I set things down!
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snakecatcher2000
5.0 out of 5 stars A "must have" tool for every household
Reviewed in the United States on October 4, 2014
Verified Purchase
Most cutting tools that use a razor blade are just plain "box cutters". But this FatMax takes it to a "nice hand tool" level and everyone should have one of these in their house as the "Go To" tool when opening boxes or cartons or breaking down cardboard for recycling -- essentially anything you need to cut but would rather not use your good kitchen carving knives. Cardboard and pasteboard will dull a very sharp kitchen knife quicker than you might think and The FatMax takes all the worry from those chores. If it gets dull just dispose of the dull blade and insert a new one and you are good to go.
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Top reviews from other countries

None
5.0 out of 5 stars found the blades
Reviewed in Canada on May 12, 2023
Verified Purchase
they are in the handle
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Lauren Kiernan
5.0 out of 5 stars Great utility knife
Reviewed in Australia on December 9, 2020
Verified Purchase
Great knife. Easy to seat the blade. Love the handy blade storage in the handle. Just moved house and this is making opening boxes a lot quicker and smoother.
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Amazon Customer
5.0 out of 5 stars Like a samurai sword
Reviewed in Canada on March 27, 2021
Verified Purchase
Cuts boxes like a hot knife thru butter
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PK
3.0 out of 5 stars Good sturdy box cutter
Reviewed in Australia on June 21, 2021
Verified Purchase
Loved it while it worked. But the blade for some reason went inside and not able to slide it out. So now totally not usable. Ended buying another Stanley snap off blade cutter.
One person found this helpful
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Gord Pinard
5.0 out of 5 stars Five Stars
Reviewed in Canada on July 19, 2017
Verified Purchase
Great knife for heavier applications
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