23-Piece Mechanics Tool Set. Includes: (1) 1/2" Drive 72 Tooth Quick Release Ratchet, 1/2" Drive 6pt SAE Sockets: 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1", 1/2" Drive 6pt MM Sockets: 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, (1) 1/2" Drive 5" Extension
- Diameter: 1/2 in