<b>Airway buffing kit 3 piece kit </b> <br> This Airway Buffing Wheel kit (1 pcs White & 1 pcs Orange & 1 pcs Blue) 8" inch Diameter 5/8" in Arbor Hole 16 Ply for Angle Grinder <br> Include 1 white airway buffing wheels 16 ply Fine polishing <br> 1 orange airway buffing wheels, 16 ply Medium Polishing <br>1 blue airway buffing wheels 16 ply coarse polishing <br>Total3<br> First use the blue one ,and the next is the orange ,the white one is the last produce to do show shine finish <br> when using our airway buffs ,you should also use the polishing compound to have a better effect, <br> after finish your work ,use a buffing rake to clean the compound so the airway buffing wheel is able to be effective for the next time you use, <br> save your time ,save your money <br>Recommended Maximum RPM Safety Limits 3000