The Pilot refill ink cartridge provides a supply for the V-Board Master whiteboard markers (5080 & 5081). By using these replacement cartridges, you protect the environment and climate. By refilling your whiteboard marker with a replacement cartridge just three times instead of using three new markers, you already save 64 percent of CO2 emissions. The cartridge change is quick and easy: simply pull off the used cartridge and then attach the new one to the casing. The cartridge is always leak-proof, even after being removed from the casing. However, it should be completely used up in the marker after opening. The Pilot refill ink cartridge ensures a pleasant and smooth writing experience. It contains alcohol-based ink. The colors are vibrant and do not fade. Later, you can clean your whiteboard by wiping it down - the ink can be easily removed this way. Caution: The ink is flammable due to its alcohol content. Therefore, the cartridge should always be stored closed. Additionally, protect the cartridge from open flames or extremely high temperatures. Important details: For V-Board Master whiteboard markers, environmentally and climate-friendly: 64 percent CO2 savings by using 3 cartridges, easy cartridge change, contains alcohol-based ink (Caution: Fire hazard!), vibrant colors, does not smudge, easily wipeable, available in various colors.