Sunex 2856 1/2-Inch Drive Universal 12-Point SAE Impact Socket Set, 15 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: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1, 1-1/16, 1-1/8, 1-3/16, 1-1/4