Car tire marker for all you tire lettering needs 4 paint pens for car tires. Special ink formula designed to last long on tires under all weather conditions Reversable felt tip, with fine side for details and narrow spaces, and wide side for quick application Works and all tires, including cars, trucks, bikes, ATVs, and more Most vehicles use about 3 pens for all 4 tires. This pack includes a fourth pen for later touch-ups if needed 1 Year Guarantee. If the product does not live up to your expectations, we will take full responsibility and issue you a refund or replacement at no cost to you.