The Ultimate Support SP-80B Subwoofer Mounted Satellite Speaker Pole mounts into subwoofer pole inserts. The SP80B gets your speakers up with minimal effort. Adjust the height of your speaker from 40 to 60 inches. The SP80B has the Perfect Fit speaker adapters to accomodate 1 1/2 and 1 3/8 inch mounts. Load capacity is 150 pounds.