At Fisher Space Pen, they note several models of pens that we consider to be the “backbone” of their business.  The classic Cap-O-Matic Space Pen has truly been the blue-collar, workhorse of the bunch. Single hand activation makes this model the pen of choice for construction crews, law enforcement, firefighters, military, first responders, medical professionals, outdoorsman and women and anyone who demands dependability in their writing instruments.  The creation of the Cap-O-Matic allowed Fisher Space Pen to offer the same technology used by astronauts, in a single hand activation but at a price that everyone can afford!

Containing a Fisher Space Pen® Pressurized Ink Refill Cartridge, the #M4RAW will write upside down - at any angle, under water, through grease, in extreme temperatures (-30 to +250 degrees F), on almost any surface, three times longer than the average pen, in the gravity free vacuum of space, and each is guaranteed for quality against all manufacturing defects.