【Multi-Grit Sandpaper Kit】We offer 5 different grit sizes of sandpaper, 5 of each grit size, for a total of 30 discs. Diameter: 75 mm. Available grit sizes are: 320, 600, 800, 1200, 1500, and 2000. 【High-Quality Materials】This sandpaper is made of high-quality latex and silicon carbide. After a special heat treatment, the surface is smooth and dust-free, providing excellent polishing, optimal sharpness, and high durability. Resistant and anti-static, perfect for grinding and polishing. 【Wet or Dry Use】Easy to use, this sandpaper requires no drilling. Simply combine the disc and the sanding pad to sand molds. It can be used wet or dry and is easy to replace during use. 【Durable Use】This wet sanding disc has a pleasant texture. Its highly resistant textile material, enriched with aluminum oxide particles on the surface and a thin suede backing, gives it great flexibility, strength, and durability. Using a sanding pad extends its lifespan.