Dry-erase markers are optimized for use on contemporary glass surface boards to deliver bold color and excellent visibility. Liquid ink delivery system applies consistently on surfaces for legible results without requiring you to rewrite letters. Bullet tip creates thick, broad lines for messages that are clear and easy to read both up close and from a distance. Low-odor, nontoxic ink erases easily and helps prevent irritation for safe use in any environment. Ink gauge lets you quickly monitor your remaining ink to prevent unexpected depletion.