Utility Knife/Box Cutter Snap Off Blades - Pack of 10-18mm - Razor Sharp SK5 Steel - Plastic Organizer Case

it's actually 17.5mm, but works on all 18mm cutters... it's twice thicker than those cheap $0.50 cutters sold online, i upgrade all of my box cutters and very satisfied with the result... highly recommended!

Item well described on Amazon, delivered quickly. easy to install and work great. Photo shows blade installed and fully extended, as well as blade packaging.

These are better than the blades I got originally. Bend without snapping. Useful thickness, Sharp. Actually, find them hard to break off to a new point, which I see is a plus. Also, like the increments for small, I got a lot of new corners out of this blade. The one on the photo I’ve already broken off one or two points on it. By the way, they are not black! For some reason, the top layer of the package is black, no idea why. The plastic case is really nice. I can keep them in a toolbelt and not worry about stabbing a finger!

Sharp , stury worked great

These are great utility knife blades that are a great value and are sharp! Stop using those dull ones in your knife and get these. Easy to use and sharp blades are safer than dull ones. (but still be careful)

You can go wrong with this. There are no frills about it. It's a basic set of no-nonsense replacement blades for your box cutter. I'd give them six stars if I could.

These blades were purchased to replace the original blade which broke after several uses. This is much stronger and better quality than the blade which came with the knife. Also, the original purchase came with one blade and cost more than this set of ten replacements. Terrific value!

As shown in video, They fit in my inexpensive blade holder and seem to be working great. Sharper than what I previously had. No idea as to why the first blade was black, but there hasn't been any rusting as I had seen in some reviews. I would expect a blade exposed to elements to rust anyhow.