... Size: 300mm outer diameter*25mm inner diameter 2. For aluminum, Ss, steel, Iron material 3. Good ... 4. The wheel made by cloth and very good for geting mirror finishing for aluminum, Ss, Stell, Iron ... if you trust me, Please contact with me for details . I can show the polishing processing ... more market. For more informations ,please feel free to contact us ,thanks! Cloth polishing wheel for hardware