For the professional quality do it yourself auto body repair, Bondo™ professional gold body repair kit combines the highest technologies offered by 3M™ for auto body filling. The body filler is formulated to bond with a variety of surfaces including galvanized e-coat, as well as wood, metal, aluminum, fiberglass, SMC, epoxy and more. The body filler also features superior 3M™ resin technology which makes it easy to mix, apply and sand. The filler is compatible for use with protective car film. The filler and hardener mixture spreads smoothly over auto body surfaces and penetrates into scratches, holes and dents. It provides a 3 to 5 min working time, cures in 20 min for reduced downtime and sands easily into a smooth surface for painting. It is non-shrinking, non-reactive and permanently durable. Water-resistance limits rust. Bondo™ professional gold body repair kit includes 3M™ professional gold body filler (32 oz.), 3M™ cream hardener, 3M™ self-adhesive metal body patch spreader and step by step instructions.