3M Bondo Fiberglass Resin 28.7 US Fl oz Filler with 0.37 Fl oz Hardener, Stage 2, Waterproof Formula for Repairing, Resurfacing, or Rebuilding Metal, Wood, Fiberglass or Masonry Surfaces (00402)

Bondo Fiberglass Resin is a strong material commonly used for autos, boat building and other repairs. This high-strength polyester resin can be used with fiberglass mats or cloths on surfaces including fiberglass, wood, metal and masonry to repair metal rust-outs and to recreate or join surfaces. It can also be used by itself as a wood or concrete sealer. It accepts nearly any paint system.