Pack Contains the following Schmidt Refills:

(3) Blue 4889 Medium
(3) Black 4889 Medium

DescriptionSchmidt MegaLine 4889 Pressurized Ball Point Refill. The Schmidt Megaline system allows not only writing upside down or under the most extreme environmental condition, but also a writing with the highest speeds. The air tight system gives these refills a literally unlimited shelf-life. They are equipped with a stainless steel tip manufactured with the upmost precision as well as special ink pastes developed exclusively for Schmidt MegalLine pressurized refills.Features

SCHMIDT® MegaLine Pressurized Refill.
Writes Upside Down and in Zero Gravity.
Fits Fisher Space Pens, Diplomat Spacetec, first version Sensas and other ballpoint pens using Fisher Space Pen pressurized style refills.
Stainless Steel Tip
Refill Reads: "SCHMIDT® MegaLine 4889 M"
Made in Germany

Technical Specs

Nib Size: Medium (0.7mm)
Colors: Blue, Black
Length – 3 1/2" (89mm)
Diameter – .189" (4.8mm)

Extended Information

SCHMIDT® MegaLine 4889 Metal Roller Ball Fits: All ballpoint pens and plotters using Fisher Space Pen pressurized style refills. Fisher Space Pens, Diplomat Spacetec, Sensa and others.

Schmidt MegaLine 4889 M Pressurized Ink Cartridge Performs in temperatures from -30ºF to +250ºF, 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.