Fisher Space Pen Ballpoint Pen Refill for Sherpa Ballpoint Adapter

Are you looking to write upside-down, under water, through grease, at 400 degree temperatures, or in …space?  Well look no further than the Fisher Space Pen ballpoint refill.  Each refill is filled with a special ink blend and then pressurized to ensure there is always ink ready to go at the tip. 

This a great option for anyone who needs to use their Sherpa in more unconventional conditions or at odd writing angles.

Point Size: Medium (0.7mm)

Available Colors: Black and Blue