A 7 piece polishing kit for ferrous and non-ferrous metals. Includes 3 compound grades of polishing medium. Set includes: Diamond compound stick (white), tripoli compound stick (brown) emery compound stick (black). Maximum speed 4000rpm. Emery stick: Cutting compound for use on copper, brass, aluminium, steel, stainless steel, nickel & iron. Diamond Compound stick: Extra-fine dry compound for use on chromium, stainless steel, carbon steel, brass & aluminium. Tripoli compound stick: Cutting compound for use on copper, brass & aluminium. 3 Cushion-sewn Buffing Wheels: 50mm, 75mm, 100mm; plus a threaded arbor.