Made for the most demanding professionals, each of our bit sockets is made from custom forged premium steel that underwent proprietary heat treatment and precisely machined to perform in toughest situations Premium bit forged with custom Chrome Vanadium steel, giving these large bits balanced tensile strength for optimal performance Chamfered end to ensure a smooth fit onto fasteners Premium Chrome Vanadium steel sockets plated with our SmartKrome protective plating are durable and corrosion resistant Single 1/2 in. drive, 9/16 in. hex bit socket, Weight: 0.2425084882 pounds, Manufacturer: Capri Tools