Teng Tools 1/2" Long Hex Bit Socket1 2" Long Hex Bit Socket Metric 5mm Chrome vanadium construction with S2 steel bits pressed into the socket Satin finish for improved grip when handling Retention groove for secure ball detent connection to the drive end Designed for use with hexagon hole fastenings, in hex screws or grub screws Manufactured to DIN7422 standards Supplied with a metal socket clip for use with a socket rail