135 pc 3 Drive Mechanics Tool Set comes equipped with 72 Tooth ratchets, a broad assortment of drive tools, and a rugged blow mold case. This case is constructed with metal hinges for separate sets, and the dimensions are specifically designed to fit into CRAFTSMAN® metal storage boxes for easy organization. 135 pc set includes (10) 1/4-in Drive Shallow 6 PT Sockets SAE (5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2-in), (9) 1/4-in Drive Shallow 6 PT Sockets Metric (4, 5, 6, 7, 8, 9, 10, 11, 12mm), (5) 1/4-in Drive Deep 6 PT Sockets SAE (1/4, 5/16, 3/8, 7/16, 1/2-in), (7) 1/4-in Drive Deep 6 PT Sockets Metric (6, 7, 8, 9, 10, 11, 12mm), (10) 3/8-in Drive Shallow 6 PT Sockets SAE (1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16-in), (11) 3/8-in Drive Shallow 6 PT Sockets Metric (8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm), (7) 3/8-in Drive Deep 6 PT Sockets SAE (3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4-in), (7) 3/8-in Drive Deep 6 PT Sockets Metric (12, 13, 14, 15, 16, 17, 18mm), (9) 1/2-in Drive Shallow 12 PT Sockets SAE (3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-in), (8) 1/2-in Drive Shallow 12 PT Sockets Metric (14, 15, 16, 17, 18, 19, 21, 22mm), (1) 1/4-in Drive Ext Bar (3-in), (1) 3/8-in Drive Ext Bar (6-in), (1) 1/2-in Drive Ext Bar (6-in), (2) 3/8-in Drive Spark Plug Sockets (5/8-in and 13/16-in), (1) 1/4-in Drive Bit Driver, (16) Short Arm Hex Keys, (4) SAE Combination Wrenches (3/8, 7/16, 1/2, 9/16-in), (4) Metric Combination Wrenches (10, 11, 12, 13mm), (1) 1/4-in Drive Ratchet, (1) 3/8-in Drive Ratchet, (1) 1/2-in Drive Ratchet, (1) 3/8-in Drive Size Adapter (1/4-in), (1) 3/8-in Drive Universal Joint and (17) Specialty Bits.