Ceramic Utility Knife Blades 10-Pack for U1, U1 Pro & U1 Ultra | Ceramic Utility Knife Blades, Zirconium Oxide with Flat Brushed Finish, fits Most Standard Utility Knives (White)

Best option for my Oknife. Comes with 10 blades and they are SHARP. Love their products and will continue to use them.

incredibly sharp. last many times longer than steel blades. They are, being carbide, more brittle than steel, so be careful about nicking the tip off. I feel they are well worth the tradeoff though. You don't have to baby them, but they will snap off if you wrench on them. If you are a neanderthal, you probably want to stick with steel blades.

Exceeded my expectations, edge retention is amazing, blades are surgical sharp. Great product!

nice blades the edge retention is amazing and they are pretty durable for ceramic blades

Really sharp, long lasting, way too expensive

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.

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.

Blades were as described. Just be aware, they are very brittle. They are super sharp, and do hold their edge longer than the steel blades, but they typically break before they start to get dull enough to be replaced.

Nice

Exactly what I was looking for. Beats the steel blades. Retains sharpness longer, more corrosion resistant. Good quality