Ratchet handle and sockets are manufactured from durable chrome vanadium steel construction. 45 tooth ratchet with quick release button allowing rapid socket change. . Socket wrench set comes with storage rail which keeps your sockets and ratchet handle secure and organised. . 3/8” drive socket set contains frequently used 6 points 10-22mm metric socket; sizes 10-11-12-13-14-15-16-17-19- 22mm. Ideal for a wide range of tasks around the home, garage and garden; 1PC 3/8" to 5"(125mm)extension bar allowing work in those hard to reach places. Sizes also available in: Amtech I0351 1/4” 12pcs Metric Socket Set, and Amtech I0371 ½”12pcs Metric Socket Set.