Used to repair defective concrete and masonry. Applications include cracked basement or garage floors, repairing decorative concrete or masonry, and anchoring steel into concrete. Can be used for interior and exterior applications. Must be applied at temperatures higher than 45 degrees. First, scrape off any loose or crumbling concrete and brush on Primatrate, a two-part primer (sold separately). Then mix and apply the two-part filler, which comes pre-measured in a double caulking tube. Double tube (450 ml) fills 24 cubic inches. Material is gray in color. May be sanded and painted. Double tube requires double caulking gun (sold separately, or may be rented).