The rugged First Responder duty knife from 5.11 Tactical is one in the series of eight quality folding knives. The First Responder features few moving parts, an oversized blade thicknesses, strike plates, friction radius, and subdued blade finishes. It is made with S30V Crucible steel 3-1/2" flat-ground 4mm blade thickness, frame lock, G10 scales and heavy-duty 3/32" steel liners, built to far exceed the daily rigors of police work. A must for every first responder, this rugged knife also offers ambidextrous carry options and precision craftsmanship.