Use one backing plate for both wool and foam. Rounded edge substantially reduces risk of burning painted surface from the edge of the backing plate. The GREEN foam is a light cut, and is our most versatile pad. Buff with light compound on clearcoat then rinse with water and apply a polish or wax. Great for humid weather where waxes may cake. The pad to use with "one-step" polish products. VP-10 or VP-11 (heavy duty) hook and loop backing plate recommended.