The Dynatron Bondo 401 Fiberglass Resin is a clear liquid solution for filling and repairing automotive surfaces. Manufactured by 3M, this product comes in a 28.7 oz can and is ideal for blending with fiberglass for a smooth finish. It is important to note that this product does not come with a warranty, and there is a California Prop 65 warning associated with it. When working with this resin, it is important to follow manufacturer instructions and take necessary precautions for safe use.