Fisher Refill Ball Pen Refill Medium, Purple

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’’)