Ensure your Staedtler® Lumocolor® whiteboard markers always have enough ink with the Staedtler® Lumocolor® whiteboard refill station. Designed to refill 351 and 351 B markers, these refills make an ideal parking place for your Lumocolor® marker pens, keeping them always filled and ready for use. This blue ink pot has a capacity of 20 ml and refills a marker up to 10 times. Markers cannot be overfilled. Simply insert marker and in 3-4 hours it is completely refilled.