The Grainger 14A141 is a Westward brand 1/4-inch drive socket set. It contains 41 pieces including 17 metric sockets ranging from 4mm to 14mm, 12 SAE sockets ranging from 1/4 inch to 3/4 inch, a quick release ratchet, 2 extensions, an adapter, 8 hex keys, and a carrying case. The chrome vanadium steel sockets have a polished finish and feature a knurled design for easy gripping. This socket set is ideal for automotive and machinery repair and maintenance. The sturdy plastic carrying case keeps the set organized and portable for use in the shop or out in the field.