The Sharpie Markers Retractable Fine Point - Black are the #1 preferred permanent marker for the motion picture industry. Because they are retractable, there is no cap for you to remove or lose. And you need not worry about your marker leaking or drying out, thanks to the Safety Seal valve design that distributes a superior seal. The ink dries quickly and is fade and water-resistant. Because the ink is permanent, you can use this Sharpie marker on most any surface. Certified AP nontoxic.