Workpro 145 Piece Mechanic Tool Kit 1/4-inch and 3/8-inch Drive Sockets Set (model W003046) is packed with an assortment of everyday useful tools.The set includes high quality chrome vanadium steel sockets and screwdriver bits crafted from S2 steel that are built for durability. Tools are marked with blue lines for metric sizes and red lines for SAE sizes.They are neatly organized in a sturdy blow-molded case for easy storage and transportation All tools in the set meet and exceeds ANSI standards. Workpro 145 Piece Mechanic Tool Kit 1/4-inch and 3/8-inch Drive Sockets Set includes: 11- 1/4 in. Drive SAE sockets: 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16 in 12- 1/4 in. Drive Metric sockets: 4, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14 mm 1- 1/4 in. Drive 3 in. Extension bar 1- 1/4 in. Drive 6 in. quick release ratchet handle 1- 1/4 in. Driver universal joint 6- 3/8 in. Drive SAE sockets: 1/2, 9/16, 5/8, 11/16, 3/4, 13/16 in. 8- 3/8 in. Drive Metric sockets: 12, 13, 14, 15, 16, 17, 19, 21 mm 1- 3/8 in. Drive spark plug socket: 13/16 in. 1- 3/8 in. Drive 3 in. extension bar 1- 3/8 in. Drive quick release ratchet handle 1- 3/8 in. Driver universal joint 5- SAE combination wrenches: 3/8, 7/16, 1/2, 9/16, 5/8in. 5- Metric combination wrenches: 10, 11, 13, 14, 16mm 1- Magnetic bit holder 58- 1″ S2 screwdriver bits 2- Adaptor 8- SAE hex key wrenches: 1/16, 5/64, 3/32, 1/8, 5/32 ,3/16, 7/32, 1/4in 8- Metric hex key wrenches: 1.5, 2, 2.5, 3, 4, 5, 5.5, 6mm 7- SAE nut driver bits: 3/16, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16 in. 7- Metric nut driver bits: 5, 6, 7, 8, 9, 10, 11 mm