Teng Tools 3/8" Long Hex Bit SocketThese 3 8" long hex bit sockets are designed for use with fastenings that have a hexagon hole, such as in hex screws or grub screws. Constructed from chrome vanadium with S2 steel bits pressed into the socket, they provide durability and precision for professional use. Key features: Chrome vanadium construction S2 steel bits pressed into the socket Satin finish for improved grip Ball recess on the female end to securely grip the ratchet Designed for