This 4” 60 grit sanding disc has a Velcro hook and loop backing which is to be used with a 4” hook and loop backing pad. The sanding pad is to be used dry with a variable speed grinder to remove rough or uneven edges on all natural stone surfaces such as granite, marble and travertine.

This combination will allow you to quickly change ascending grit sandpaper discs from the Velcro backing pad.