We've created the DX199 Pro Razor Knife with safety in mind because razor blades are at the top of the list for workplace-related accidents. Utilizing our Double Lock Technology, anyone can work with confidence knowing that the added protection prevents the knife from accidentally closing. The knife's fiberglass filled nylon handle has a specially designed shaping to fit nicely in your hand with texture for grip and natural pulling motion with the knife. The knife is equipped with standard sized double ended utility blades, and the E-Z replace system makes it easy to change the blades while working.With Coast's commitment to quality, the DX199 Knife is backed by Coast's lifetime warranty against defects in materials and workmanship.