Diamont Hardeners are high-performance urethane catalysts designed to deliver a tough, crosslinked finish when used with compatible topcoats. Formulated for professional refinishing, these hardeners ensure excellent durability, gloss retention, and chemical resistance. Suitable for use in a variety of temperature ranges, Diamont Hardeners pair especially well with LC4100 Clear and other R-M clearcoat systems. Available in multiple speeds to match your shop’s needs.