Product Details: U-joint design is perfect for accessing hard-to-reach fasteners. Sockets have large size markings permanently forged into sidewall for easy size identification. All tools meet or exceed ANSI standards. Lifetime factory warranty on tools. Purchase Includes: 3/8" Socket Set (10pc): 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm