The OEM Sharpie Ultra Fine Permanent Marker SAN37121 features an ultra-fine point tip that marks on most hard-to-mark surfaces with a permanent ink. Its extra precise narrowed tip allows for extreme control and accuracy, making it ideal for identifying and labeling tasks. The quick-drying, nontoxic alcohol-based ink is both fade-resistant and water-resistant, ensuring durability in various conditions. The ink is certified AP nontoxic, making it safe for use in any environment.