This Stanley 41 piece set contains a comprehensive range of 1/4" and 3/8" drive sockets, suitable for both the home handyman as well as the professional tradesperson. Packaged in a strong and durable case, your tools will always be organised and well protected. Contents include: 9 x 1/4" Drive Metric Sockets (6pt) 4, 5, 6, 7, 8, 9, 10 ,11 & 12mm 9 x 1/4" Drive Imperial Sockets (6pt) 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16 & 1/2" 12 x 3/8" Drive Metric Sockets (12pt) 8, 9, 10 ,11, 12, 13, 14, 15, 16, 17, 18 & 19mm 5 x 3/8" Drive Imperial Sockets (12pt) 3/8, 7/16, 1/2, 9/16, 5/8, 11/16 & 3/4" 1 x 3/8" Drive Female to 1/4" Drive Male Adaptor 1 x 1/4" Drive Spinner Handle 1 x 3/8" Drive 75mm Extension 1 x 3/8" Drive Reversible Ratchet | Stanley 1/4" & 3/8" Drive Socket Set - 41 Piece