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. . ¼” drive socket set contains frequently used 6 point 4-13mm metric socket; sizes 4-5-6-7-8-9-10-11-12-13mm. Ideal for a wide range of tasks around the home, garage and garden; 1PC 1/4″ to 3″ (75mm) extension bar allowing work in those hard to reach places.. Sizes also available in: Amtech I0361 3/8” 12pcs Metric Socket Set, and Amtech I0371 ½”12pcs Metric Socket Set.