6 - Black Parker&reg; Compatible Ballpoint Pen Refills. Smooth Writing German Ink and 1mm Medium Tip. #1782467 6 Black Parker Compatible Ballpoint Pen Refills. Compare to Parker item #1782469. Free-flowing, smooth writing German ink with Medium 1mm ballpoint tip. Original manufacturer quality with metal shaft. Packaged in reusable zippered bag. Parker compatible ballpoint pen refills are used in 90% of the worlds pen brands! Before ordering refills, please match our picture to your empty ink cartridge to make sure it measures 3.875 / 98.4 mm. To learn more, search "Jaymo Parker Refill" on YouTube. Save even more with our refill multi-packs! Special Offer: Get 5% off when you buy 2 or more Jaymo - Cottage Mills products.