Large TDI Knife - Straight Edge

The TDI Law Enforcement Knife is purpose-built as a true “last-option” tool for officers facing extreme close-quarters threats. When an officer cannot access their firearm or is in a struggle for control of their handgun, the TDI provides a compact, intuitive cutting option engineered for fast, instinctive deployment under stress.

Built Around a Defensive Concept

Created by John Benner of the Tactical Defense Institute, the TDI was developed specifically as an off-hand, pistol-style knife. Its ergonomic profile and draw method mirror the motion of drawing a sidearm so the blade is available with minimal additional training. The reversible sheath allows the knife to be mounted on either the left or right side of the duty belt, making it immediately usable for both right- and left-handed officers.

Practical Features for Duty Use

With secure retention and a low-profile design, the TDI integrates seamlessly into uniform carry while remaining quick to deploy when needed. The reversible sheath and ambidextrous carry options let agencies and individual officers tailor placement for their tactics and comfort. Designed for professionals by a practitioner, the TDI Law Enforcement Knife is a discreet, reliable tool for critical, last-resort situations.