This dry-erase marker features vivid, alcohol-based pigment ink that is easy to read at any distance. It utilizes a twin pipe feeder (TPF) system consisting of two pipes that connect the ink supply to a cotton reservoir at the tip. One pipe allows ink to flow out while the other allows air to flow in, creating sharp, consistent lines from the first line until it runs out of ink. The marker uses replaceable tips and ink cartridges, making it an economical and eco-friendly alternative to disposable dry-erase markers. The ink cartridges are transparent, letting you easily see how much ink is left.
Note: Do not remove the plastic wrap near the back end of the marker until you are ready to replace the ink cartridge. Do not replace the ink cartridge until it is completely empty. Removing the cartridge while it contains ink may result in leakage.