Acme Approved Folding Ceramic Razor Blade Non-Metallic Blade Wear-Resistant Blade for Cutting Tape, Ropes, Plastic Cuffs. Survival Escape Knife

This razor blade is very small, it is somewhat fragile, think of a regular razor blade and what that would be able to cut when using this knife. It is very concealable, I thin this could pass through a metal detector. Just treat it gently and it will work well.

Great every day carry blade for professionals looking for something that is invisible when wearing slacks. I use mine every day for all kinds of odds and ends. It's a very small knife so it's not for everyone, but it's exactly what I was looking for. Blade stays very sharp for a long time as long as you don't abuse it. No chance of rusting because it's a plastic handle and a ceramic blade - no steel parts.

First off let me say that these are actually made by Black Scout Survial, their logo is on the handle, but distributed by Acme Approved in their packaging. These are made small enough to be concealed in pocket SERE and survival kits. You could use them for EDC as it will fit nicely on a keychain. The intended purpose is for cutting rope, zip ties and duct tape in counter-custody situations (from bad people, not law enforcement). They are sharp like a metal razor blade but being made of ceramic they hold better edge retention and will not rust. I have mine pictured on top of a credit card sized card beside a quarter for size comparison. On mine the metal ring that holds the blade is tight when closed but pretty loose when open, but better than the other way around. You can tighten the metal ring with a pair of pliers but I left mine as is. So if you need an emergency travel blade to conceal this fits the bill. Just remember it's made small for a reason.

This is a handy and wicked sharp tool at a size that carries easily. Very happy with all aspects.

I bought mine and after maybe 2 weeks of used I noticed it was broken