Ka-Bar 1480CLIP TDI LAW ENFORCEMENT Clip Stainless Blade The TDI Law Enforcement knife was designed to be used as a last option knife. In extreme close quarters encounters where a suspect is attempting to take an officer's handgun, or the officer cannot access the handgun, the TDI Knife is available. Designed as an "off hand" knife that can draw like a pistol, the reversible sheath can be worn on either the right or left side of the officer's pant belt.