FastCap TAPER LOCK TaperlockThis unique patented design uses a tapered spindle to firmly hold any bit in place. Pull out on the red collar while grabbing the bit and the TaperLock releases. Push the bit in and slide the red collar toward the drill and the TaperLock is locked. Works great with bits that don't have indents, notches or grooves. It also works with C6.3 and E6.3 bits. You will never leave your bit behind on the screw.FastCap TAPER LOCK Taperlock Features: One-touch auto-lock for easy release of the bit One-hand operation Works with any bit*Bit or drill not included