Hardest, toughest, longest lasting! Two-part, polyester saturated, aliphatic urethane coating formulated for maximum resin depth and hardness with a long lasting, mirror-like gloss. Ultimate finish coat for fiberglass, aluminum, steel, and wood. For use on all epoxy primed substrates or direct application on thoroughly cleaned and degreased fiberglass gelcoat surfaces above the waterline. For brush, roller, or spray application with appropriate thinner. Package includes base and reactor.