This Metric Socket Set includes 14 different sockets that are made from chrome molybdenum steel. The set is compatible with various brands of hand tool and battery tool accessories. There is 1 each 12mm, 12-point shallow socket that is 1/4-inch drive. The 3/8 drive sockets that are 12-point sockets include an unbranded Japanese product, a 12mm, and a Williams 19mm. The 10mm and 11mm sockets are HUSKY Products. There are 1/2" and 14mm sockets that are SK Products. There is a 16mm BLACKHAWK Socket, and there is a 17mm TRUECRAFT Socket. There are 4 each 1/2" drive sockets that list as a CRAFTSMAN 12-point shallow socket, a 6-point 10mm (SK), a 17mm unbranded socket, and a BLACKHAWK 19mm (3/4") Impact socket. These tools are name brand high-quality tools designed for professional use in various industrial applications, backed by the Tool Makers brand, warranty, and reputation.