Fantastic grout tile marker Grout Aide dries quickly to cover like permanent, water-resistant paint you can even use it to change colored grout to white Anti-bacterial formula helps keep mold from returning Nontoxic and odorless- no ventilation required Makes old grout look better than new instantly Simple to use Note: please keep away from children Size: 148 x 21 x 16 mm repair pen allows you to easily cover stains or change the color of grout. If the grout in your bathroom or kitchen is looking dingy or old, this grout and tile marker is the quick and affordable way to refresh it. With the repair pen, you can simply paint over the old grout to make stains disappear. Just shake and apply -- the permanent repair pen color dries rapidly and leaves a clean, uniform grout line without any obnoxious fumes. This grout and tile marker also features a non-slip comfort grip, so you'll be done in no time. Package List: 1 x Pen