The set of triangle diamond polishing pad consists of 60 grit (Blue), 120 grit (Yellow), 220 grit (Orange), and 400 grit (Red) electroplated diamond polishing pads and 800 grit (Green), 1800 grit (Lime Green) and 3500 grit (Brown) resin bond diamond polishing pads. They are velcro backed, and can be used dry or wet on FEIN tool for detail polishing of granite, marble, concrete and other types of stones.Compatible tools include Dremel Multi-Max, Rockwell SoniCrafter, as well as Ryobi detail sanders