The DX199 Pro Razor knife was created with safety in mind because razor blades are at the top of the list for workplace-related accidents. Utilizing 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. Equipped with standard sized double ended utility blades, and the E-Z replace system makes it easy to change the blades while working. Backed by Coast's lifetime warranty against defects in materials and workmanship.