Size: 8 inches Material: cotton+metal Color: As Shown Description: Our airway buffing wheels are made of 66 layers of cotton, which are specially installed in the center of the steel ring to create wrinkles on the cotton allowing the buffing wheel to run at a lower temperature, thus keeping the polishing cooler, which Allows you to polish longer than standard buffs. Airway buffs are often used in place of standard spiral-sewn buffs, these airway buffs are similar in stiffness to spiral-sewn buffs. Air channel buffing wheels should not faster than 3,600 RPM, the air channel design allows you to perform longer and cooler buffs than standard buffing wheels with polishing compounds. Package Contents: 1 x Polishing Grinding 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. 3. Wrinkles allow the polishing wheel to run cooler, thus keeping the polishing cooler. 1. The airway polishing wheel is made of cotton, which is specially installed in the center of the steel ring to form folds on the cotton . 2. The air channel design allows you to polish longer and cooler than standard buffing wheels. 5. Used for fine polishing of stainless steel, copper, aluminum, furniture, ceramics, etc. 4. The rotation speed of the airway polishing wheel should not exceed 3,600 RPM.