The Duo-Socket provides one socket for all applications. This set includes the following: 24 tooth quick release ratchet, 3″ and 6″ wobble extension and the socket sizes include: Deep Fractional: 3/8″, 7/16″, 1/2″, 6/16″, 5/8″, 11/16″, 3/4″, 13/1″, 7/8″, 15/16″, 1″, 1-1/16″, 1-1/8″, 1-3/16″, 1-1/4″, 1-5/16″, 1-3/8″, 1-7/16″ and 1-1/2″.