Cleaning polymeric (nylon) disc is designed for angle grinders, fit 22.23mm. Used to treat surfaces from: rust, corrosion, old paint, adhesives, epoxy coatings and other contaminants. Does not remove metal or change the shape of the surface. In the manufacture of circles, ceramic grain is added to the composition, as a result of which the circles have a very coarse grain size. Material: tool steel, nylon fibers with silicon carbide abrasive layer + ceramic grain.