The Waterproof Auto-Mix Dual Tubes Tile Grout is a dark gray epoxy grout designed to reconstruct grout lines in porcelain tiles. This 13.5 oz (400ml) pack includes two tubes of grout and a grout brush, making it easy to apply and clean up. The waterproof material resists water and restores dirty grout, providing a durable and high-quality finish for your tiled floors and walls.