Craftsman 10 pc,3/8 in Dr Standard & Metric Socket Wrench Set & Craftsman 3 pc Extension Bar set,Bundle Pack Standard Sockets: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 3/16, 7/8-in. Metric Sockets: 10,11, 12, 13, 14, 15, 16, 17, 18 mm Tray to organize the pieces and make this set very portable 3/8 in. drive extension bar set Includes 3, 6 and 10 in. quick-release bars. Craftsman Guaranteed forever warranty