Remove Sludge Silly PuttyProduct Features: This high quality car detailing clay bar can quickly remove paint oxidation, iron powder, black spots, brake dust, tar and other stubborn dirt raised on the surface of the car paint, restoring the paint surface to be flat and smooth. Special Attention: The use of car clay bar should be soaked in water and kneaded to soften, car paint with a car wash liquid clean, especially can not have mud and sand (produce scratches are almost