Wera 05003637001 8794 sc zyklop short extension free turning sleeve 1 2in wera 05003637001 this short zyklop extension from wera is made from brushed chrome plated chrome vanadium and has an easy to grip free turning sleeve for the rapid tightening of screws and nuts this extension has a 1 2n square drive socket with a ball lock wera 05003637001 8794 sc zyklop short extension free turning sleeve 1 2in