This is a combination pack of three 200 GRAM Poly-Clay bars. Included is the RED (Medium), YELLOW (Fine), and GREEN (Extra-Fine). Each 200 GRAM bar if used properly is enough material to clean up to 20 VEHICLES! They will not "mar" the paint like wet-sanding would. Our Poly-Clay bars are intended to completely clean a vehicle's surface while applying the right amount of abrasive to remove overspray, rail dust, acid rain deposits, road grime, and bugs. These bars are perfectly suited for removing paint contamination before the paint correction process, or applying wax to a vehicle.