PVA Abrasive Wheel Kit is an abrasive for a wide range of grinding, blending and polishing on metal surfaces, marble, travertine, onyx and general masonry materials. The set includes 2 pieces of the grits 60, 120, 220, 400 and 600 grit polishing wheels that are color coded for easy identification. A total of 10 abrasives are included in the kit. These resin-bonded discs are designed to withstand the friction of dry polishing.