The OEM Sharpie Twin-Tip Marker SAN32003 features dual degrees of precision with both fine and ultra-fine tips in a single marker. It is designed to mark on most hard-to-mark surfaces, providing permanent marks on many materials. The ink is fade-resistant and water-resistant, making it suitable for various projects. This convenient and versatile marker utilizes a quick-drying, nontoxic, alcohol-based ink formula.