MegaLine 4889 Refill

Schmidt Megaline 4889 is an air tight, gas pressurised ballpoint refill. Its precision manufactured stainless tip and exclusively developed ink paste gives the Megaline refills unlimited shelf life and the ability to write in the most extreme environments, even upside down. 4889 is 89 mm long. This refill will fit any pen designed for Fisher Space Pen refill.