Quick Change Magnetic Nut Setter Bits SAE and Metric (10 Piece Set) 1/4" Hex Shank Includes Most Common MM and SAE Sizes: 6mm, 7mm, 8mm, 10mm, 12mm, 1/4", 5/16", 3/8", 7/16" and 1/2" Sandblasted, Heat Treated Hardened Chrome-Vanadium Steel Quick Change Bits Fit Most Power Corded and Cordless Drills Precision Milled