8-440 Hs420 Hardener Fast

Fast-curing hardener for HS420 clearcoat, HS primer, filler and surfacer. Designed for spraying small areas at normal temperatures and as a curing agent in sanding filler. The UHS formulation delivers low viscosity with high solids content while meeting VOC requirements, providing smooth application and reliable cure for repair and refinishing work. 2.5 L pack size — variant packaging differs from base product.