The TDI/Hinderer knives are the result of a collaboration between John Benner, the President and Chief Instructor of Tactical Defense Institute, and Rick Hinderer, a renowned custom knife maker. Drawing from their extensive experience as a police Lieutenant and Fire Fighter/EMT respectively, Benner and Hinderer have designed these knives specifically for real-world emergency situations. The Hell Fire model, in particular, features a recurve Tanto blade that ensures a secure grip and can be used with either hand due to its ambidextrous design. The knife comes with a durable locking hard plastic sheath and a reversible black metal belt clip (1480CLIP) for convenient carrying options. The sheath can accommodate a maximum height of 1.75 inches, width of 1.25 inches, and thickness of 0.25 inches.