Steel telescopic extension rod with M20 threaded bolt

Telescopic connecting rod for satellite speaker systems - Telescopic, variable length, extension tube for connection of satellite speaker systems - Double ended rod, 35mm diameter on one side, and 40mm diameter built with a M20 threaded bolt on the other end, for connection to subwoofer threaded flange - Allows for the most ideal separation of subwoofer and speaker - All-steel construction, with locking pin to prevent accident descent and vibration.