[Package] : This airway buffing wheels set contain 1 white airway buff of 12 ply for fine Polishing,1 orange airway buff for middle polish 1 blue airway airway buffing wheels 12 ply for coarse polishing and 1Yellow airway buffing wheels 12 ply for hard polishing,there are 4 airway buffing wheels together for different produce [Widely Used]:Used for polishing vehicle parts such as wheels,tanks,bumpers,fenders,etc.Or any other metal trim/part of aluminum, brass, copper and stainless steel. [Good Design]:This Airway wheels are Designed to buff longer and cooler than standard buffs. Recommended Maximum RPM Safety Limits 3000. [High Quality]: High Grade Cloth,white cloth Textile density is 133*72,orange and blue Textile density are 133*100,Galvanized center ring is resit-corrosion,very durable [Dimension]:Airway buffing wheel diameter: 8",Inner Arbor Hole:5/8 inch,12plys.