Westcott Full Size Auto Retractable Ceramic Utility Box Cutter, Plastic, Green, 1-Count

Does the job to open boxes delivered to my door step. Since the blade is not metal, this will not easily harm you. You have to keep a steady push to expose the blade, I wish there was a mechanism to just keep the blade out. The alternative is to pop the top off, but I find that causes the blade to become wiggly.

I bought this box cutter because it looked cool. When I got it I was confused, the blade looked like a piece of plastic. But I tried it and found it worked almost as well as a new steel bladed box cutter. It was then I learned this was a ceramic blade. I don't know the ins and outs concerning ceramic vs. metal blades, I just know this blade also works. I haven't worn a blade out yet so I can't say if it lasts as long as metal blades. And I can't say how much of a hassle replacing blades would be vs. a metal blade (although changing a metal blade in many box cutters is a dark adventure indeed. I do know that through my aggressive issues with Fat Finger Syndrome, the ceramic blade is far less likely to bite me than the metal ones. I would buy again.