SubstrateCold Rolled Steel and Alumimum Sheet Molded Compound (SMC) Styrene Butadiene Rubber (SBR) Natural Rubber Surface TreatmentMEK Wipe, Grit Blast, MEK Wipe320-grit Sandpaper, Dry Rag WipePrimed with LORD 7701 Surface TreatmentPrimed with LORD 7701 Surface Treatment