Wera 8794 SC Zyklop 1/2" Drive 125mm Free-Turning Sleeve Extension Bar, 003637
Model: 003637. The free-turning sleeve on the Zyklop Speed and the Zyklop extension effectively accelerates the turning of screws and nuts. 1/2" Zyklop extension with free-turning sleeve, short. For 1/2" square sockets with ball lock.