Wet and Dry Use: The 25mm wet - sanding disc kit is designed for both wet and dry use. Adding water droplets helps prolong the life of the disc. Additionally, the foam sanding pad minimizes vibration to ensure effective sanding and polishing. Various Soft Polishing Pads: Different - colored sponge polishing pads represent three hardness levels to meet various polishing needs: red and blue for light polishing, yellow for medium polishing, and orange and green for heavy polishing. Use the polishing pads in the following order: orange, green, yellow, blue, and red, and then finish with a wool pad for a mirror - like finish. Efficient and Practical Kit: This kit is specifically designed for the complete sanding process. Start with aluminum sanding belts for initial grinding, then use the disc for wet sanding to achieve a smoother surface. Finally, use the sponge polishing pads and wool pad for fine - tuning the finish. It is compatible with various rotary tools and features a 1/8 - inch shank. Wide - Application: The grinding head and disc are ideal for fine grinding and polishing of various materials, including metal, resin, wood, mirrors, glass, and opal. The sanding belts are perfect for small wooden items, nails, and hand - polishing. The maximum speed is 10,000 RPM, but it is recommended to keep the speed below 2,000 RPM for optimal results. Easy Storage: This 355 - piece 25mm wet - sanding disc kit includes 320 sheets of 16 - grit wet sandpaper, 2 3.2 - mm shafts, 1 backing pad, 1 hand sanding block, 20 sanding belts, 1 1/8 - inch sanding head, 1 0.09 - inch sanding head, 5 polishing pads of three hardness levels, 1 wool polishing pad, 2 black foam pads, and 1 pair of white gloves — all neatly organized in a plastic box with a labeled grit reference chart for easy access., Manufacturer: LuLobtg