"Forged in chrome vanadium steel. Knurled sockets with 12 points for coupling every 30°. Mirror chrome finish. Plastic organizer case. 10 Metric combination wrenches: 6, 7, 8, 9, 10, 11, 12, 13 , 14, 17 mm 10 Standard Combination Wrenches: 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2" , 9/16", 11/16". 6 Metric Short Combination Wrenches: 8, 10, 11, 13, 14, 16 mm. 6 Standard Short Combination Wrenches: 5/16", 3/8", 7/16" , 1/2", 9/16", 5/8"."