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

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)

Nice working

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!

Seem like good enough quality but note that they misspelled the word “steel” on the packaging which is worrying for a company that makes metal products

Really sharp blades to cut foam. They snap off better than the dollar store ones too so you don't have to waste blades if you want to snap a dull tip off at the guided line and get the most out of a blade.

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!

Great buy but not what I wanted.

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.