3m Products Marine Premium Filler - Gallon . Make sure your boat starts every time Two-component vinylester filler for cosmetic repairs and fairing above and below the waterline. Cream hardener included. Formulation Two-part vinylester fillingfairing compound Recommended Usage Filling blister damage keelrudder damage cracks gouges fairing applications Features Contains microspheres for sandability Used abovebelow water line Drying 10 min. working time sandable in 30 min.