Bondo Original Filler is an all-purpose, two-part filler compound used for interior or exterior repairs for home or auto. Fill dents, dings, and scratches on your car or around your home. The easy-to-use filler shapes in minutes and is formulated to be non-shrinking. This fast curing two-part filler allows you to make high-quality, permanently durable repairs to metal, aluminum, masonry, concrete, and more. Spread easy and cures in only 20 minutes for the same day repairs. Suitable for wood, steel, aluminum, fiberglass, and concrete. Includes Bondo red cream hardener. Formulated to be non-shrinking.