Extreme durability high speed steel cutting edge for superior durability in nail embedded wood stays sharper longer Clean holes and easy removal chamfered edge allows bit to be removed easily after drilling flutes remove excess wood chips Fast, easy drilling aggressive lead screw tip pulls the bit through material quickly and effortlessly Increased value - extra lead screw and wrench included in every package Deeper cuts longer shank that cuts 4 x 4 in without extension Quick change - impact hex shank allows for quick changing of the bits 2 in pipe and rigid conduit entrance 2-1/2 in tubing entrance Tougher than nails

RoHS Compliant