OKNIFE Utility Knife Blades 10 Pack - Compatible with Otacle U1 & U1 Pro Series and Most Utility Knives, Ultra Sharp Durable SK5 Steel for Heavy-Duty Cutting Tasks

Ceramic blades are useful not because they are sharp, but because they do not dull, or dull very slowly. Most ceramic blades are not actually all that sharp (compared to a well sharpened steel blade), but stay moderately sharp for a really long time. These blades are actually really sharp. I saw a video review that called these out as much sharper than other ceramic utility blades, and that review was correct. You obviously cannot expect these blades to last when used to cut things that will chip the edge. I'm using them mostly to cut cardboard, and for that they're excellent. Some had suggested that these blades were too thick to fit in some holders. I haven't had a problem, and I measure their thickness as a few ten-thousands of an inch thinner than general purpose Milwaukee utility blades and about 5 thousandths thinner than Stanley hook blades.

Super sharp

These knife blades work very well! They cut through cardboard over and over again. I have yet to replace the blade.

These are great blades, they can chip but then they are serrated, they are a little thinner than steel but seem to work all the knives ive tried

Very sharp. High quality

Great blade for cutting, easy to break for industrial use.

Very sharp and stay sharp. They’re brittle and may break if flexed. I use mine for opening boxes and cutting cords. If you’re using it for other stuff—don’t—unless you’re prepared to replace. If all you do is snap off the tip, just turn it around in blade holder. Voila! Not cheap, but worth it to me.

These fit the OKNIFE and are scary sharp. I think you could do minor surgery with these.