Bondo Fiberglass Resin

100% waterproof and sandable in only 2 hours, Provides long-lasting structural strength when used with Bondo Fiberglass Cloth or Mat, Compatible with all paints and gel coats, Can be used on multiple surfaces including metal, fiberglass, concrete, wood and more, Includes liquid hardener, Waterproof, Compatible with all paints, including gel coat and marine paints. Color:Clear Size: 1 Gallon.