This product is a lot of Craftsman 16mm, 17mm, 18mm, and 19mm standard metric sockets with a 1/2 drive size. The sockets are chrome finished and have a 12-point drive type. Manufactured by Craftsman, these sockets come in sizes 16mm – 19mm, making them versatile for various automotive and industrial applications. Perfect for professionals and DIY enthusiasts alike, this set of sockets is a valuable addition to any tool collection.