In extreme close quarters encounters where a suspect is attempting to take an officer's handgun, or an officer cannot access his handgun, the TDI knife is available as a "last option" knife. When worn on the pant belt the entire unit - knife and sheath - is well concealed. Designed by John Benner, founder and owner of Tactical Defense Institute. This knife has a black coated blade and black handle. The sheath is specifically designed to fit police officer's pant belt (1.675" wide) on the opposite side of firearm.