Kapci 3.75L 2K High Build Filler Primer Kit Grey FAST DELIVERYModel No. FLK625/3GKX3A high build primer with excellent coverage, it is easy to apply and flat giving a good final appearanceCan be applied over original factory primers, previously primed GRP/Fiberglass, steel, polyester putty, well sanded existing finishes in solid condition, after degreasing.Kapci 625 primer filler is suitable for air dry, low bake, and infrared drying.4:1 Mixing ratioKit Size: 1Ltr Primer & 0.25Ltr Hardener /Activator.