8796 LB Zyklop ",flexible-lock", extension with free-turning sleeve, long, 3/8",, 3/8", x 200 mmWera Zyklop extension with flexible-lock: when activated the sockets are secured and permanently fixed, any unintentional loss being avoided. When the system is deactivated, the sockets can be quickly attached and exchanged. Equipped with a free-turning sleeve for faster turning of screws and nuts.