The Rupes Mini Blue Coarse Foam Pad 100 mm (4 inch) is an open celled foam compounding pad that is designed for maximum polishing action. Use this pad with Rupes Zephir Gloss Coarse Gel Compound on a Rupes LHR75 3 Inch Pneumatic Random Orbital Polisher to eliminate severe paint defects such as acid rain marks, oxidation, deep scratches, and 1500 grit wet sanding marks.