Rock carbide tip maximizes carbide surface contact. U-flute cleans debris out for fast, efficient drilling. Hex shank interlocks with drive sleeve, allowing for quick change from drilling to driving. Drivers automatically disengage when screw is seated to prevent overdriving. For use with electric or cordless rotary hammers or hammerdrills in applications such as installation of concrete screws without switching tools or bits, fastening conduit and electrical boxes, install window and door frames or sill plates. Includes: drive sleeve, percussion bit holder, insert bit adapter, #2 insert bit, #3 insert bit, 1/4 nutsetter, 5/16 nutsetter, hex key, medium Tough case. Includes: SDS Plus hex shank bits and percussion bit holder, two sizes of nutsetters and two sizes of insert bits for installing a wide range of hex head or Phillips concrete screws.