This could well be the ultimate last ditch hide-out blade. The Ceramic Razor Blade is totally non-metallic, made from Zirconia ceramic, a super-hard material that is extremely wear-resistant. This covert blade with a chisel-grind edge is designed as a hide-out blade for cutting tape, ropes, plastic cuffs, etc. The blade has a lanyard hole so that it can be sewn into clothing or attached via a lanyard to your belt or gear. Color: black. Size: 1.25" x 0.4" (30mm x 10mm). Thickness: 0.028" (0.7mm). Weight: 0.017 oz.