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. 1 L pack size — variant packaging differs from base product.