The STAEDTLER refilling station allows for clean and environmentally friendly refills: Place your universal pens in the station, and after a few minutes, they will be ready to write again, and fully filled after a few hours. Overfilling is impossible, as the pen only draws the maximum amount of ink available from the station. After a few minutes, the pen is ready to write again; after 3 to 4 hours, it is completely filled. Practical refilling station made of polypropylene (PP) for easy and clean refilling of the Lumocolor pen. Simply insert the pen or marker into the refilling station. Capacity: 15 ml. For refilling Lumocolor permanent universal pens 313, 314, 317, 318.