OnStage SSA20M Speaker Mount Adapter with M20 Threading, Black
Upgrade your subwoofers! Replace existing 1 3/8" Sockets with the SSA20M Threaded speaker Adapter. Designed to be a direct replacement for most socket mounts; simply remove and replace. M20 threading provides a rock-solid, wobble-free connection between the subwoofer and compatible speaker poles. Perfect for use with the SS7746 adjustable subwoofer shaft.