Belt Trauma Kit (BTK)Control traumatic bleeding all within the reach of your duty pistol personal belt. The Basic Belt Trauma Kit (BTK) with Combat Gauze LE is an all in one kit that provides the essential equipment to control traumatic bleeding all within reach of your duty pistol personal belt. Fitting on a belt up to 2 inches wide, the BTK can be worn rotated 90 to make room for other gear. The Complete Belt Trauma Kit (BTK) which also includes the Combat Application