Usage Tips:Widely used: This 8-inch soft airway polishing wheel can be used to polish vehicle parts such as wheels, fuel tanks, bumpers, fenders, etc. Or any other metal decoration/parts grinding and polishing of aluminum, brass, copper. GOOD DESIGN: The air channel polishing wheel design allows for longer polishing times and lower temperatures than standard polishing wheels. Can be used to remove heavy deposits and oxides from a variety of surfaces. HIGH QUALITY: Tough non-woven material. The galvanized center ring is corrosion resistant and very strong and durable. [Package]: For fine polishing; 1 orange air channel polishing wheel, for medium polishing; 1 blue air channel polishing wheel, for coarse polishing; 1 yellow air channel polishing wheel, for hard polishing, 4 The combination of air channel polishing wheels is suitable for different products [Good Design]: This airway wheel is designed to be longer and cooler than standard polishing wheels. Recommended maximum RPM safety limit is 3000. Colour:blue+orange+yellow+white Material:cloth+iron Package Contents: 4 x polishing wheel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.