* Fits all cordless drills and screwdrivers * 1/4" hex shank for fast bit changes * Durable high speed steel quickly penetrates wood, metal and plastic * Hardened and tempered for long life * * 13126: 3/32" * 13127: 7/64" * 13128: 1/8" * 13129: 9/64" * 13130: 5/32"