Quick release hex shank, 6 in. total length (150 mm) and an insert depth of 1/8 in. drive impact wrenches, drills, and drivers. Sizes: 6 in. (150 mm) long x 1/4, 5/16, 11/32, 3/8, 7/16, 15/32, 1/2, and 9/16 in.