Sunex 3675 3/8-Inch Drive Standard Metric 12 Point Impact Socket Set, 13-Piece CR-MO alloy steel for long life Lifetime warranty Heavy duty blow molded storage case 12 point design means less wear on fasteners Metric - mm: 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19