Fisher Space Pen’s Sealed Pressurized Ink Cartridge performs in temperatures from -30º F to +250º F, underwater, in zero gravity, at any angle - even upside down! The ultimate in dependability!

The choice of ski patrols, search and rescue teams, law enforcement agencies, armed forces, and everyone who demands reliability in a writing instrument.

Our PR Cartridge will typically write more than 12,000 feet depending on style and surface.

All PR cartridges come with a plastic adapter which allows them to be used in Parker Style Pens! (Adapter dimensions - Length: 1’’ / Width: 0.23’’)

Point Sizes: Fine - .9mm; Medium - 1.1mm; Bold - 1.3mm