Century Drill and Tool 68803 Magnetic Hex Nutsetter Set, 3 Piece 3 piece set includes 1/4-Inch 5/16-Inch and 3/8-Inch power hex nutsetters 1/4-Inch power drive shank fits all power screw guns cordless screwdrivers variable speed electric drills and quick change adapter Made from heat treated chrome vanadium steel 1-3/4-Inch overall length