The STAEDTLER filling station enables clean and environmentally friendly refilling: Place your universal pens in the filling station and after a few minutes the pens are ready to write again, and after a few hours they are completely filled again. Overfilling is impossible, as the pen only draws the maximum possible amount of ink from the filling station. After a few minutes the pen is ready to write again; after 3 - 4 hours again, completely filled. Practical filling station made of polypropylene PP for easy and clean refilling of the Lumocolor pen. Simply insert the pen or marker into the refill station. Contents 15 ml. For refilling Lumocolor non-permanent universal pens 311, 312, 315, 316.