UNLIMITED POTLIFE: No Mixing, No Activation, Ready for Use TRUE 2K QUALITY: Optimum corrosion resistance and adhesion Does not require sanding Higher Fillling Power Use it to provide 2K protection for sanding burn throughs Car-Rep 2K Epoxy Primer Filler Sealer has excellent anti-corrosion properties, easy application and good filling power. Featuring wise 2K technology Car-Rep 2K delivers maximum 2-component performance: optimum corrosion resistance and adhesion as well as chemical and scratch resistance. This product does not require sanding and recommended to be used together with putties or fast-drying, high build fillers, these primer filler sealers offer 2K protection for sanding burn throughs and scratches etc. 2K epoxies undergo chemical curing for the strongest paint surface, 8-10 days for primary cure.