Empty Pebeo marker for filling with Pebeo Colorex ink. It has an excellently constructed tip that combines flexibility and precision, while ensuring regular and uniform ink flow. The empty Colorex marker is characterized by great ease and speed of filling. Colorex markers can be refilled directly using a pipette inserted through the black valve at the top of the marker. Full filling of the marker requires 5 drops (approx. 5 ml).