A: Hello Kris! Thank you for your question and interest in Diablo sanding accessories. The Diablo Performance Pad is intended to be used with the Diablo SandNet sanding disc. The Performance Pad helps save the life of the tools base pad by reducing wear on it and will provide a little contour ability while sanding. Hope this helps!
A: Pad does not screw on; it's a thin hook and loop fastening pad (about 1/16" thick). I've had good success with these; they are considerably more expensive than Diablo's regular pad so probably no savings.