Marbig Kraft Paper Roll, 900mm x 340mt e41342 Backward compatible with displays supporting Color:Black Oak Backward compatible with displays supporting Full HD 1920x1200 Practical PP (polypropylene) refill stations for easy and clean refilling Simply insert marker and minutes later it is ready for use Marker is completely refilled after 3 4 hours Impossible to overfill as the marker can only draw its own maximum ink content out of the refill station Can refill up to 7 markers depending on the condition of the marker tip Blue refill ink Durable Construction: Made from high quality kraft paper catering to various packaging needs