Sunex 3690 3/8-Inch Drive SAE Universal Impact Socket Set, Standard, 12-Point, Cr-Mo, 5/16-Inch - 1-Inch, 12-Piece CR-MO alloy steel for long life Lifetime warranty Heavy duty blow molded storage case 12 Point sockets offer double the starting points as 6 point sockets SAE - inches: includes 3/8 drive deep universal - 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1