Package include: 11pcs 4-Inch Diamond Polishing Pads(3*Grit50,3*Grit100,2*Grit200,1*Grit400,1*Grit800, 1*Grit1500), 2 *Hook and Loop Backing Pads with 2* female threads(drill adapters).50-200 grit for wet or dry polishing , higher grit of 400-1500 must be used with water to achieve best polishing. User-friendly: Only the back of diamond polishing pads are color coded for easy identification, so no need to worry color stains on your work piece when using. 2 hook and loop backer pads for easy connection and removal.Operate between Optimal 2800RPM to MaX4500 RPM to avoid potential damage.5/8-11 thread fits most grinders and polishers Wide Applications: Perfect grinding,honing,shaping and polishing for granite,concrete,marble,stone,tiles etc. Start with low grit and work your way up to get best results.It works with angle grinder with spindle size of 5/8'-11, also fits for power drill thanks to a drill adapter. Material Quality: Polishing pads are made of high-grade diamond powder and resin powder, aggressive and durable. Flexibility: As thin as 3mm, it works excellently either on a flat countertop or sink roundabout. Carelessly spill cleaner on the marble and leaves ugly etches?