The Original TDI Half-Serrated Knife by KA-BAR is a masterfully crafted tool, designed as a "last option" knife in extreme close-quarter encounters where a suspect might be attempting to take an officer's handgun, or when an officer can't access his handgun. When worn on a pant belt, the knife and its hard plastic sheath are concealed effectively. The TDI knife features a partially serrated edge on its fixed blade. Coated in a coyote brown finish for the handle scales & sheath, and a reversible black metal belt clip. A reliable, versatile, concealed defense tool for law enforcement officers.