Double Side Wool Pad Adapter

Like rotary backing plates, double sided pads have female 5/8" x 11 threads, but you cannot attach them directly to your rotary polisher:

The buffing pad will screw onto the 5/8" male polisher shaft, but the back of the pad will be against the body of the polisher;

As the standard polisher spindle is longer than 11 threads, the shaft will emerge on the front of the double sided pad, and you risk harming the paint.