With Coast’s commitment to quality the DX211 Knife is backed by Coast’s lifetime warranty against defects in materials and workmanship.4"" The knife is equipped with standard sized double ended utility blades and includes three extra blades with thumb studs for ambidextrous opening.DOUBLE LOCK RZR KNF 7. The knife’s fiberglass filled nylon handle has a specially designed shaping to fit nicely in your hand with texture for grip and easy pulling motion with the knife.