Irwin Impact Performance 3-Piece Magnetic Nutdriver Bit Set

Lobular design drives fastener on side instead of corner for less stripping and longer life. Rare earth magnets hold fasteners securely with four times the hold of standard magnets. 1/4" quick change shank is designed to work with impact drivers, and reduces slipping in standard drill chucks. Black oxide finish resists corrosion and increases the life of the nutsetter. Set includes 1 each: 1/4", 5/16", 3/8" x 1-7/8" nutdrivers.