Loosens hard-to-turn screws, bolts or nuts. Handle design prevents possibility of hitting hand with hammer when striking impact driver. Can be used with sockets or with included bit holder for screwdriver bits Includes eight screwdriver bits: No. 2 Phillips bit, 1-3/8" long with 5/16" hex No. 2 Phillips bit, 3-1/8" long with 5/16" hex No. 3 Phillips bit, 1-3/8" long with 5/16" hex No. 3 Phillips bit, 3-1/8" long with 5/16" hex 5/16" wide x 1-3/8" long with 5/16" hex slotted bit 5/16" wide x 3-1/8" long with 5/16" hex slotted bit 3/8" wide x 1-3/8" long with 5/16" hex slotted bit 3/8" wide x 3-1/8" long with 5/16" hex slotted bit