Final Systems ULTIMATE 2K HS Standard Hardener 2.5L The Final Systems ULTIMATE 2K HS Standard Hardener 2.5L is a universal hardener developed for use with the ULTIMATE Repair System. Designed to provide dependable curing performance, it is compatible with ULTIMATE 2K HS Clearcoat, ULTIMATE 2K HS DTM Clearcoat, and ULTIMATE 2K HS DTM Colour. The Standard speed is ideal for general refinishing applications, delivering consistent curing and a high-quality finish for professional automotive repair work.FeaturesUniversal 2K HS hardener for the ULTIMATE Repair SystemStandard curing speed for general refinishing applicationsCompatible with ULTIMATE 2K HS ClearcoatCompatible with ULTIMATE 2K HS DTM ClearcoatProvides reliable and consistent curing performanceIdeal for professional automotive refinishing and SMART repairs