ProTool 1004 Magnetic Nut Setter, Metal Extended-reach 6 magnetic nut setter for more efficient install of 5/16Nuts and bolts Super-power magnet holds nut firm - no more dropped pieces; excellent quality - made in taiwan Chrome-vanadium steel alloy for superior durability; rust resistant sand blasted finish Quick-change 1/4Hex shank bits drill chucks, impact drivers, extensions & bit holders Sold individually - order any quantity; 2.4 oz each, other sizes/lengths available