The STAEDTLER refilling station allows for clean and environmentally friendly refills. Simply place your universal pens in the refilling station, and after a few minutes, they will be ready to write again; after a few hours, they will be completely filled. Overfilling is impossible, as the pen only draws the maximum amount of ink available from the station. This practical refilling station made of polypropylene (PP) makes it easy and clean to refill Lumocolor pens. Simply insert the pen or marker into the refilling station. Contains 15 ml. For refilling Lumocolor non-permanent universal pens 311, 312, 315, 316.