Cleaning polymeric (nylon) disc is designed for angle grinders. Landing 22.2 mm. Provides gentle cleaning of the surface from: rust, corrosion, old paint, glue, epoxy coatings and other contaminants. Doesn't strip metal or reshape surfaces. Workable materials: steel and stainless steel (INOX), wood, plastic, composite materials. Material: tool steel, nylon fibers with an abrasive layer of silicon carbide.