Features and Benefits: Activator for use with High Teck 77420 Series 2.1 VOC High Solids DTM Primer/Sealer only.Activator for 2.1 VOC High Solids DTM Primer/Sealers-77423, 774234, 77425 | Excellent corrosion resistance and adhesion | 4:1 mix ratio | Size: half pint.