Designed for filling, bonding & rebuilding wood, fiberglass, ceramic, glass, metal, masonry & many plastics. Meets harsh demands of marine & industrial environments. Handles like putty, hardens like steel, sands like wood. Creamy paste consistency. Apply on vertical/horizontal surfaces. Easily fills gaps. Can be shaped to rebuild damaged components. Provides waterproof repairs. Use with fiberglass tape or cloth to bridge holes & reinforce structural repairs. Sand, paint, drill, tap or file.