Teng Tools 3/4" Extension BarThe 3 4" Extension Bar, available in 100mm and 200mm lengths, is designed to extend the reach of your sockets while maintaining a secure connection. It features a retention groove for the ball detent on the drive end and a ball detent on the male end to hold sockets firmly in place. Manufactured to DIN3123B standards, it ensures reliability and durability. Each extension bar is supplied with a metal socket clip for convenient storage on a socket rail.