• Diameter: 25 mm (1 inch), only one grain. • Sandpaper for dry and wet use, suitable for 1-inch abrasive pad. • Grit: 7000. Total of 100 units per batch. • Compatible with most rotary tools, such as die grinders, air grinders, electric drills, etc. They can also be used for hand polishing. • Uses: polishing metal, wood, plastic, aluminum, artificial stone, wooden furniture, mold processing, precision equipment, cars, and jade jewelry. • The smaller the grit number, the coarser it is. The larger the grit number, the finer it is. • Product dimensions: 2.5 cm in diameter, 2.5 cm in length, -0.1 cm in height. • Total product weight: -0.001 kg.