Sunex 3360 3/8-Inch Drive Standard Fractional Socket Impact Set, 12-Piece CR-MO alloy steel for long life Lifetime warranty Heavy molded storage tray Includes most common SAE sizes used for automotive repairs SAE - inches: 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1