After the etching primer, the parts are shot with a primer surfacer. The surfacer fills imperfections and can be sanded after application. Paint can be applied over the primer surfacer once it has been sanded with 600-grit paper. A coat of sealer is sprayed over the primer surfacer, which will fill in minor scratches. The surfacer helps eliminate stone chips by providing a coat of paint that acts like a cushion (stone shock absorbers) and absorbs the shock from stone impact. The surfacer is a premium two-coat urethane coating.