Thick and fluffy pads provide superior polishing performance. Fibers effectively act like thousands of tiny planes, ensuring gentle, uniform abrasion. Extra-porous wool traps removed finish and evenly distributes polishing compounds. Ultra-durable, low-carbon steel wool holds up under the most extreme application conditions. Grade 3—Standard. Floor Pads Application: Hard Floor; Diameter: 20"; Color(s): Gray; Color Family: Gray.