3 PIECE 4''X3/8'' MAGNETIC IMPACT NUTSETTER SET

1/4" Hex shank 4" long X 3/8" 6-Point Nutsetter. A powerful magnet for fastener retention. Chrome Vanadium steel construction with black phosphate finish to reduce corrosion and rust. Designed to drive on the flat side of the fastener and not the corners only to extend the life of the fastener. For use on all cordless, electric, and pneumatic impact wrenches, drivers, and drills.