*Limited Run* Made from "Thunderstorm Kevlar" composite. Originally made for the aero-space industry, this composite is a woven Kevlar (yes, the stuff they make bulletproof vests out of!) base with strands of brass wire woven through it. It is very tough, and has a great look and texture. *Note: You may be able to feel the ends of the "wires" from time to time, this is normal and they will wear away with use.* Replacement LBS buttons for Strider and ZT knives. (May also fit other makes/models with 3/8 od x .090 thick LBS buttons).