high-build, high-solids premium polyester primer surfacer that is compliant with California and national rule VOC regulations. it has been specifically developed to work with 1K and 2K etch primers, while offering exceptional flow and leveling. other features include smooth spraying, easy sanding, fast dry-to-sand time and a shrink-resistant formula. High build formula with minimal texture on surfaceExcellent adhesion to fiberglass, SMC and woodFast dry to sand time reduces cycle timeWaterborne compatible COMES WITH 4 TUBES OF HARDERNERS