Features:* .* Made of alumina, the sandpaper is and anti-static enough, good for sanding and polishing * Come with 10pcs sanding discs in 100mm/4" diameter; 2pcs of each grit: 60/80/120/180/240* 6mm diameter polishing pad, M10 thread is suitable for smoothing inner and outer curved edges, preparing the surface and fitting most small rotary tools* Open coating provides an even and consistent scratch pattern, special stearin coating provides a better surface finish and excellent cleaning and polishing results* Can be used for polishing, such as metal, plastic, aluminum and wood, good wear resistance. Artificial stone, furniture and wood products, metal, car. Specifications:* Matter: Alumina, Polyurethane * Sandpaper diameter: 4 inch/100mm * Polishing pad diameter: 4 inch/100mm * Thread size: M10* Grit: 60/80/120/180/240, each 2 pcs* Max. Running speed: 12000 rpm Package contents:1 * sanding pad1 * M10 threaded adapter10 * sanding discsNotes:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.