Features These hex impact socket bit sets come with an assortment of bit sizes that fit a hexagonal-shaped indentation in the fastener head. Measurement Type / SAE Tip Size / 1/2 in, 1/4 in, 3/8 in, 5/16 in, 5/8 in, 7/16 in, 9/16 in Drive Size / 1/2 in Material / Alloy Steel Finish / Black Oxide Number of Pieces / 7 Replaceable Insert / No Tip Style / Hex Impact Rated / Yes Tether Ready / No Piece Count Range / 2 to 25