Mirka Q. Silver is an aggressive abrasive for fast and efficient stock removal resulting in an excellent and consistent finish. It is suitable for use on composite materials, hard and soft woods, MDF, veneers. It also performs very well on mild, carbon and stainless steel, aluminium, cast iron, copper alloys, brass and bronze, lacquers, body filler, plaster, putty, sanding of paint, paint removal and more. Its performance in sanding hard wood and composites is extremely good. An even, semi-open coating of aluminium oxide grain and resin over resin bonding provides the perfect finish and good durability. The backing consists of a flexible and strong impregnated latex paper. The abrasive coating includes calcium stearate to prevent clogging.