Hi George, the replacement 20cm glue sticks are stock code J1932. We do not stock the release agent as a replacement part. It is Acetone [nail varnish remover] diluted with 10% water. Personally I have never had to use the release agent – I use proprietary body panel wipes to clean the painted surface of silicon polish residues and never had a puller pad remain stuck to the bodywork – they normally pop-off when the screw is tightened.