Craftsman Mechanics Tool Set, 83 Piece Hand Tool And Socket Set, Cmmt12121 The 83 pc. 1/4-in. and 3/8-in. Drive Mechanics Tool Set is equipped with improved low-profile 1/4-in. and 3/8-in. drive 72-tooth ratchets with 5 arc swing and up to a 25% thinner head* that helps deliver greater access in confined spaces. Packed with a broad assortment of 6-point sockets 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. Proudly backed by a Full Lifetime Warranty. *As Compared To CMMT81747, CMMT81748 LOW PROFILE RATCHET: Up to 25% thinner head* for access in tight spaces (as compared to CMMT81747 CMMT81748) 72-TOOTH RATCHET: Delivers 5 degree arc swing EASY TOOL STORAGE: Durable Blow Molded Case ALL IN ONE MECHANICS SET: Contains a full assortment of sockets, ratchets, and specialty bits for automotive enthusiasts and mechanics CORROSION RESISTANCE: Full Polish Chrome Finish FULL LIFETIME WARRANTY