The X-tra Seal Tire Marking Crayon Stick is the perfect tool for marking various surfaces, including tires, construction materials, steel, lumber and fabrics. This crayon stick offers high visibility, even in wet conditions, so you can be sure that your markings will be seen. It is easy to use and can be used on various surfaces, making it a great choice for your project. FleetPride is your First Click in Heavy Duty®.