Different Strokes: Sanding blocks are available in a range of roughnesses from coarse to superfine. They come in 60, 120, 200, and 400 grades, so you can select the right one for your task. The finer the sand, the higher the polishing effect, the coarser the sand, the better the polishing effect. Quality material: The diamond hand wiper is made of high quality diamond resistance and high elastic sponge, with high wear resistance and reusable. With sharpening, fast polishing, high brightness and other advantages. Widely Used: Our diamond polishing pads work great for granite, marble, concrete, glass. It never leaves stain on the stone surface during work and has good polishing efficiency. Convenient and useful: for home or industrial use. Lightweight and portable, easy to store and carry. Help you quickly solve the problems you often encounter in life such as chipping, burrs and edges. Considerate design: 60# is used for general E slats and floor tiles , 100# is used for ordinary tiles, 200# is used for glass, and 400# is used for fine polishing. The side groove design is more convenient, lightweight and easy to use.