NexLand Ceramic Razor Blade 1992 Ultra-Sharp Box Cutter Utility Knife Blades 6pcs

Edit 2: based on my feedback and request, NexLand is now producing serrated variations of the black ceramic blade.The man that owns NexLand is extremely nice and if you ever need to contact him, he will do his best to make it right and satisfy the customer. I will only purchase my utility blades from him from now on.EDIT 1:on my routine daily use, one black ceramic blade lasted for more than 4 weeks before replacing, as opposed to a standard 10 cent utility blade that normally lasts me 3 days. Given the convenience of not having to replace blades as frequently, how the blade does not tarnish, and how the black ceramic hides the imperfections gained from usage, they are worth it to me.They are so good, that I had NexLand create a sample of a serrated version. Now, this is the only black ceramic serrated utility blade too! Excited to see if he will decide to produce and carry them. Serrated blades always last much longer than straight blades at the cost of precision.Original Review:AMAZING!There are several white ceramic utility blades available nowadays, however this appears to be the ONLY manufacturer of BLACK ceramic utility blades. They are flawless,straight blades (they better be, at $3 each), and are actually sharper than my Lenox Gold blades.Black ceramic is approx. 2X~ "stronger" than white ceramic, while white ceramic is approx. "11x~ stronger than steel", so these blades should last a very long time. There are no markings or stampings on either side of the blade, and has a nice brushed finish.My intended use case is an EDC Utility knife to pocket everyday, so i wanted a blade that didn't rust from all my hand oils, that stayed sharp for a long time, and didn't look cheap (The Lenox Gold blades look terrrrrrible after only 48 hours in the pocket)One of the six blades did arrive with a chipped edge, as seen in the last photo, but I contacted and was quickly refunded for the single blade. Satisfied!

For the use I got these for (cutting the plastic wrapper of pool chlorine tablets) these are excellent. They are extremely sharp, they go right through the plastic, and they do not corrode the way steel blades do. They also work very well for cutting plastic sheet or film or paper. But, when using these, you have to follow certain procedures--you have to use they with a cutting board or cut through to a smooth moderately hard cutting surface, and you cannot use a lot of pressure on them, they are brittle. They are a specialized blade for certain uses and you have to keep this in mind

Picked these blades up because I wanted something that would not rust and is super sharp for my Z-knife. For those who don't know a Z-knife is used while SCUBA diving to cut lines away if you get fouled up in them. Sadly while the screws are stainless steel in my Z-knife and the body is plastic the blade rusts to pieces. So far I love these blades and after cleaning up my Z-knife it fit in place perfectly.Now for the bad thing about the blades. While they are super sharp and will stay that way a long time they can not be tweaked. Ceramic is very hard and brittle. In a Z-knife that is not a problem since the blade is well protected and line is pulled into the blade. In a regular blade holder you can not twist the blade at all as it will chip or snap ruining the blade. As long as you know that and handle the blades correctly they will last a long time.MuttMutt Outdoors

These blades are plenty sharp enough, and the seem to be quite durable. But they seem to be a little bit thicker than the metal blades that you normally get with different box knives. I've had to really work on them to replace the metal blades with these ceramic ones, and I've had one knife that worked perfectly fine with metal blades, but when I put one of these into it, it really didn't want to retract or extend the blade like it was supposed to. It seems that maybe the "waist" of the blade is a bit thicker than they are on the metal blades or some of the other ceramic ones, so it's catching on the side of the knife as you're trying to extend it. Overall, though, I've found these to be good, especially on the knives where you can fold out the blade, not use a spring mechanism to extend it.

I WORK FOR FASTENAL AND THIS IS THE ONLY KIND OF RAZOR BLADE FASTENAL WILL ALLOW. THEY ARE FOR LIGHT AND MEDIUM USE AND THEY WILL BREAK FAIRLY EASILY. THEY ARE RAZPOR SHARP AND YES YOU CAN REALLY LAY YOURSELF OPEN IF YOURE NOT CAREFUL.BEEN THERE, DONE THAT......THREE TIMES

These blades are good where a clean cut is needed. Many steel blades cut well but can leave metal residue on some items

These blades fit great into my knife and are razor sharp. Great quality too. Will buy again.

I thought this product was so cool. I have a slice ceramic blade I use to open my packages but I have Milwaukee and Ryobi and Fiskars.. sooo I wanted to try this. It seemed perfect. My first blade swap it sliced my finger open. I would avoid this just get slice. Keep it separate. I have to throw out my favorite hand towel. These guys suck.