123 pc., 3/8 in. drive standard and metric set. High-quality alloy steel. Rust-resistant nickel-chrome plating. 117 sockets: 6 pt. Deep Metric (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, and 19mm) 6 pt. Metric (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20mm); 6 pt. Deep Standard (3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, and 7/8 in.) 6 pt. Standard (1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, and 13/16 in.); 12 pt. Standard (5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, and 7/8 in.); 12 pt. Metric (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 21mm); 6 pt. Mid Length Standard (3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, and 7/8 in.); 6 pt. Mid Length Metric (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, and 19mm); 8 pt. Standard (1/4, 5/16, 3/8, 7/16, and 1/2 in.); Standard Bit Sockets (7/32, 9/32 and 3/8 in.); Slotted Bit Sockets (#1, #2, #3, and #4); Torx Bit Sockets (T-30, T-40, T-45 and T-50); Standard Hex Bit Sockets (5/32, 3/16, 7/32, 1/4, 5/16, and 3/8 in.); Metric Hex Bit Sockets (4, 5, 6, 7, 8, and 10 mm) Set also includes 3/8 inch drive quick release teardrop ratchet, 3, 6, and 10 in. extension bars, 10 in. Flex T handle, universal joint and 5/8 and 13/16 in. spark plug sockets.