Wera 05003525001 sa zyklop extension with free turning sleeve short 1 4in wera 05003525001 this zyklop extension from wera has an easy to grip free turning sleeve for the rapid tightening or loosening of screws and nuts made from chrome vanadium with a brushed chrome plated finish it is suitable for use with 1 4in square drive sockets with a ball lock wera 05003525001 sa zyklop extension with free turning sleeve short 1 4in