The Craftsman USA Deep-Well Metric Socket Set of 8 with Rail is a high-quality set of hand tools designed for automotive use. This set includes sockets with a 6-point design for a secure grip on nuts and bolts, making it easier to remove and install them. The deep-well design also allows for access to fasteners that are buried deep within the engine or transmission. Crafted by Craftsman, a trusted brand in automotive tools, this set is a reliable and durable addition to any mechanic's toolbox.