Staedtler 488 64-4 Textsurfer Classic Marker Pen 15-20 Refills for 364 Orange Practical PP refill station for easy and clean refilling Impossible to overfill as the pen can only draw its own maximum ink content out of the refill station Minutes later the pen is ready for use; after 3-4 hours it is completely refilled Available in orange colour Content 30 ml