Drive Mechanics Tool Set is equipped with improved low profile 72-tooth ratchets with 5° arc swing and up to a 25% thinner head, 1/4-in DR and 3/8-in DR only as compared to CMMT81747, CMMT81748, & CMMT81749, that helps deliver greater access in confined spaces. Packed with a broad assortment of 6-point and 12-point sockets, combination wrenches, and drive tools in a durable blow mold case. The case is constructed with metal hinges and designed to fit into CRAFTSMAN® metal storage boxes for easy organization. Perfect as an addition to your current tool collection or as a starter set.