The Atomic Bear TAB-Refill-Black-3Pack Ballpoint Pen Refills Medium for Tactical Pen and More [Pack of 6] With Spare Spring - Fits Parker Ballpoint Pen - Dark Black
Gerber Impromptu Tactical Pen Black Medium Original Equipment Ballpoint Refills | eBay
How Do I Change the Ink Refill from my Tactical Pen? - YouTube