Hook-and-Loop Surface Conditioning Disc, Abrasive Type Non-Woven, Abrasive Material Ceramic, Backing Material Not Applicable, Backing Weight Not Applicable, Coating Coverage Not Applicable, Grade Extra Coarse, Grit Not Applicable, Overall Diameter 4 in, Series PN-DH, Number of Vacuum Holes Non-Vacuum, Color Dark Gray, Package Quantity 100