Every screw used on a Microtech knife is proprietary, meaning a standard screwdriver or tool bit will not fit these exclusive screws. Due to a high customer demand, Microtech introduced a new, handheld 303 Stainless Steele driver Tool kit for every Microtech OTF knife old and new, all in one Wrench. The handle is hollow so a few of your favorites can be with you at all times. The Tool Kit has bits for: the Ultratech (older and newer models), UTX-85, UTX-70 (older and newer models), Troodon, Combat Troodon, Dirac, Dirac Delta, L.U.D.T., and Sigil; it also includes glass breaker bits for the Ultratech, Combat Troodon, and Dirac Delta.