EZ-Fair Epoxy Fairing Compound is a lightweight, two-part epoxy putty designed for filling and smoothing surface imperfections above and below the waterline. The special resins used in EZ-Fair impart a high degree of water and chemical resistance. Use it to level uneven surfaces, and to fill gouges, scratches, or other damage on fiberglass, wood or metal surfaces. Packaged in a convenient dual cartridge that contains both the epoxy plus activator and fits a standard caulking gun.