Magic Clay Bar "Coarse"" Grade, is 200(g) of stretchable and easy malleable for safe removal of embedded contaminants, tar, overspray, and oxidized paints from the surfaces of the vehicle. It’s a non-abrasive product, so it’s safe for all aluminum, chrome, fiberglass, paint, and finishes. Does not degrade when used with water based cleaners and shampoos. It is recommended to be used with Artdeshine Citrus or Organic Cleaner Shampoo for lubrication. Can be used on 7-8 vehicles.