Marine One-Step Compound - 1 GallonMeguiar's Marine/RV One Step Compound is an advanced aggressive, yet safe cutting compound with polish that cleans and restores gloss to gel coat surfaces in one step. It removes moderate to heavy oxidation, scratches, stains, and tough water spots on all fiberglass and painted gel coat marine or RV surfaces. Incredible results by hand or by machine. Features:Formula is specifically designed to both clean the gel coat surfaces and leave behind a high gloss finish in one stepRemoves heavy oxidation, scratches, stains, and tough hard water spots on all fiberglass gel coat surfacesRestores neglected surfaces while producing an amazing shine and lusterRestores the color leaving behind a rich, high glossFormulated to be effective by hand or by machine