Smith & Wesson 24-7B HRT, Zytel, Black PlainEdge. The Smith & Wesson Black HRT 24-7 Utility knife features a 3.22" tactical drop point blade of 440C stainless steel with thumb stud for easy opening and black coating for increased corrosion resistance and non-reflectivity. Lockup is via a liner lock. Removable metal belt/pocket clip. Black Zytel handles with Lanyard hole.