These glass leveling discs polish glass in the same way that wool pads polish automotive paint. However, glass is very hard. The 3 Inch Glass Cutting Pads provide a flat, textured surface to effectively level scratches and imperfections without distortion. Each pad has hook and loop fasteners to secure the pad to a 2 7/8 or 3 inch backing plate. Lake Country’s flexible backing plates each have a flexible beveled edge to prevent contact with the glass during operation. The 3 Inch Glass Cutting Pads can be used with your dual action or circular polisher. Work in a small area using a back and forth motion. Keep the glass wet while you work by misting it with water.