Schmidt Megaline 4889 - Pressurised Ballpoint Refill - Medium
The Schmidt Megaline 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! Suitable for a Fisher Space ballpoint pen.
The Schmidt 4889 is 89mm long and 4.75mm in diameter.