Gallon, Boat & General Purpose Polyester Laminating Resin- This is a very high quality 100% polyester ortho hand lam resin that is made in the USA. This is not the poor quality resin you get at the big box store. Cures with a surface tack so that subsequent layers can be applied without sanding. Surface Agent can be added to the resin to get a smooth tack free surface. Requires MEKP to cure.