HB Body 534 High Build 2K Primer Grey Superb Sanding 1LTR + FREE ACTIVATOR 1.25 Litre kit consists of 1L compliant high build primer & 250 ml FREE hardenerFast drying - ready for sanding after 1 hour @ 23°CExcellent adhesion to all correctly prepared metals and plastic bumpersAdhesion to unsanded OEM panels (E-coat)Good covering and filling propertiesMixing ratio 4:1 + 50% thinners (1 coat 30-35um) (2 coats 120-140um)Easy to sand Dry P400-P500 Wet P800Smooth surface without orange peelEasy to flat without clogging the paper