Bondo 25-oz Green Patching Compound

Covers small holes and rust-outs without the need for backing strips, cloth or mat. Great for use on fiberglass, wood, metal, aluminum, SMC, and masonry. Sandable in only 20 minutes. Compatible with all paints, including gel coat and marine paints. When dry, provides waterproof finish. Includes Red Cream Hardener. Works great on boats.