Refill cartridges are fitted with inink reservesin ready to be released with a tap when a writer starts running on empty. Dye based ink is permanent on paper but will wash out of clothing. Receive high-quality ink when you buy Parker® pen refills. Pen Refill Type: Fountain; Special Ink Type: Washable; Refill For Series: All Parker® Washable Ink Fountain Pens; Ink Color(s): Blue.