GREEN Abrasive Sanding Disc is a cost-effective product, made of high quality aluminum oxide grain, flexible latex paper and strong phenol resin. The Hook&Loop backing makes disc changes fast and easy. It is excellent for blending and finishing on aluminum and carbon steel, as well as woodworking applications for heavy and medium stock removal and finishing on hardwoods, softwoods, and composites. It also work well on primer, paint, sealers, topcoats, fiberglass, and plastics.