Powerbuilt tool sets offer useful tool combinations that meet the needs of serious home mechanics and pros. Ratchets, sockets and drive tools are built from high-quality mirror-polished chrome vanadium steel Sockets have large size markings permanently forged into sidewall for easy size identification All tools meet or exceed ANSI standards Purchase Includes: 3/8" Spin disk ratchet 3" Extension 6" Extension 3/8" Drive 12 Point Sockets: 3/8" through 3/4" 5/8" Spark Plug Socket Durable Storage Case Lifetime Factory Warranty