OTC 5942 8-Piece XZN 'Super Short' Socket Bit Set One piece socket bit design: 1/4 inch and 3/8 inch square drive Short profile 20 - 25 mm for fasteners in tight quarters Use with internal square drive or external hex drive Rugged construction for long life, packaged on a socket rail - convenient for hanging or tool drawer Sizes included 4, 5, 6, 8, 10, 12, 14, and 16 millimeter