6” Advanced G Mop Compounding Head - 5/8" Thread. Features and Benefits: Up to 30% more cutting action Suitable for use on most paint systems Developed specifically for use with water Multi layer foam provides increased cutting action and greater durability Recessed back plate safeguards against accidental surface contact Available with fixed head or hook and loop back plate Hook and loop system allows you to switch between G Mops quickly and easily For use with: G3 Regular Grade Paste Advanced G3 Liquid G4 Paste Advanced G4 Liquid G6 Rapid Grade Paste G10 Extra Fine Grade Liquid For use on: Refinish paint GRP and composite surfaces Acrylic surfaces Furniture coatings (Priced Per Each).