Timberline Knives - ECS Safety Cutter with Black Zytel Handles. Model TM1892. 6 overall. 2 1/2 stainless black coated safety hook blade with integrated oxygen wrench. Black Zytel® handle scales. U.S.E.R.S. (Ultimate Secure Easy Release System) holds blade securely in sheath until needed. MOLLE compatible sheath can also be worn on belt or around neck. Designed to cut seat belts, cordage, clothing, webbing and straps. Felhoelter design.