Chrome plating provides increased protection from rust and corrosion. Flexible extension is designed for low torque applications in limited access areas. Ball and spring socket retention. - Williams TatH sockets, extensions, and adaptors feature a locking hole on all four sides, not just one. Williams TatH ratchets and drive tools feature a locking pin which mates with the side lock hole for positive retention. This reduces the risk of misaligning the socket that typical competitor's sockets with just one side hole create.