Flex Coat High Build is the original formula, same as it ever was. A great all around finish for rods of all types. Flex Coat. For over 30 years the name has said it all. Hard yet flexible, Flex Coat is the wrap finish that all other brands are compared to. And with good reasona | Flex Coat offers the very best combination of properties found in a quality thread wrap epoxy finish. Superior leveling, outstanding durability, brilliant clarity and unequaled adhesion make Flex Coat the world&';s #1 epoxy wrap finish. Flex Coat High Build is the original formula, same as it ever was. A great all around finish for rods of all types.