The Sharpie Professional Magnum is an impressive specimen designed to tackle mammoth jobs. With an oversized tip for extra large lines and an extra-large ink supply, the Sharpie Magnum makes challenging applications a cinch and lasts long. The marker features water-resistant and quick drying ink to ensure high quality results and reliable performance on most surfaces, including wet and oily surfaces. When you need a mark that packs an industrial strength punch, reach for the Sharpie Magnum.