Woodstock D3091 6-Inch by 5/8-Inch Ply by 3/4-Inch Hole Hard Airway Buffing Wheel This airway buff is 100-Percent cotton sheets which are treated to stiffen the material. The pleats help hold compound. Hard buffs are perfect for removing light scratches in a wide variety of metals. 6-Inch diameter 3/4-Inch arbor hole size 5/8-Inch wide