Great for general purpose sanding on a wide variety of materials including wood, paint, metal, fiberglass, and plastic Extra coarse is best for quick stock and paint removal on extremely rough surfaces Sheets can be cut-to-fit 1/2 sheet, 1/3 sheet, or ¼ sheet sanders Resin bonding locks the grain to the paper for longer sanding life Heavy duty paper backing is durable enough for both hand and power sanding