This set features the most popular sizes in both SAE and metric sockets in standard and deep lengths. Set Includes: 1/4 inches Dr Pro ratchet, 1/4 inches drive thumbwheel ratchet universal joint, 1/4 inches drive 2 inches and 6 inches extensions, 1/4 inches drive adapters: 1/4 inches Female - 3/8 inches Male and 3/8 inches Female - 1/4 inches Male, 1/4 inches drive 6 point deep SAE sockets: 3/16 inches, 7/32 inches, 1/4 inches, 9/32 inches, 5/16 inches, 11/32 inches, 3/8 inches, 7/16 inches, 1/2 inches, 9/16 inches, 1/4 inches drive 6 point standard metric sockets: 4mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm.