Black Jack Speed-Fill elastic crack filler is a fast drying, rubberized compound for the repair of asphalt roads, driveways, pavements, expansion joints, walkways and foundation walls. Speed-Fill elastic crack filler provides a long term flexible repair on cracks and joints up to 3/4 in wide. Count on Speed-Fill elastic crack filler’s quick drying formula to accelerate seal coating jobs. Speed-Fill dries to dark black finish.Lasts 2 to 3X longer than basic fillerNon-shrink formulaFlexes and seals cracks up to 3/4 in