Diamond hand polishing sheets are designed for hand polishing of soft granite, concrete and marble. They are especially useful when used to polish hard to reach areas. The sheets can be attached for velcro backer so that they can reach ogee and other curved areas. All these diamond polishing sheets are resin bonded. The entire set of 8 comes with 50 grit, 100, 200, 400, 800, 1500, 3000 grit and a buff pad.