4x UPol Power Can Grey Primer Spray Aerosol Anti-Corrosive Metal 500mlUPol Power CaN Grey Primer  Spray Aerosol Anti-Corrosive Metal 500mlModel No. PCPG/ALPrimes and fills surface imperfections prior to topcoating. Use on fully cured paint, polyester body fillers and GRP.Can be overpainted with most paint systemsEasy sandingHigh build and fast drying