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.