Upgrade your subwoofers! Replace existing 1 3/8Ó 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.
 
 
 
 
Replaces existing 1 3/8" sockets
 
M20 threading provides wobble-free connection between the subwoofer and compatible speaker poles
 
Includes four mounting screws