This tool should be used as a guide only. Pilot QD Primer may not be an exact match for High Build Metal Primer by but we have given the closest match we can. Pilot QD Primer should do the same job and have similar properties but you should always read the technical data sheets for both Pilot QD Primer and High Build Metal Primer to be sure. Please see any notes to see any major differences and call us on 01285 862132 if you have any specific questions.