Loosens Rusted, Frozen Nuts, Bolts and Screws. Unique design delivers over 200 ft. lbs. of "Shock Torque." Can be reversed to tighten. Can also be used with impact sockets! 3/8" sq. drive with 3/8" drive bit holder; #1, #2, #3, #4 Phillips, and 3/8" straight slot bits. 29000 3/8" Impact Tool 29520 3/8" Bit Holder 29630 #1 Phillips Bit 30180 #2 Phillips Bit 29550 #3 Phillips Bit 30190 #4 Phillips Bit 30170 3/8" Straight Slot Bit 30150 Case *To reverse it you push handle down and twist then hammer it. Look on the handle the instructions on twisting are stamped on the handle for the direction you want to go. *All bits are made overseas *1/4" bit where insert into holder *Instructions on handle