Fisher Space Pen M4B Cap-O-Matic Matte Black Ballpoint

The Fisher Space Pen M4B Cap-O-Matic Matte Black Ballpoint is a reliable, versatile writing instrument designed for professionals who require dependability in extreme conditions. Known as the workhorse of the Fisher Space Pen lineup, the classic Cap-O-Matic is favored by construction crews, law enforcement, firefighters, military personnel, first responders, medical professionals, and outdoor enthusiasts. Its single-hand activation and durable design make it ideal for high-demand environments.

Featuring a non-reflective matte black powder coat finish, the Cap-O-Matic is both functional and aesthetically appealing. It offers the same cutting-edge technology used by astronauts, providing exceptional performance at an affordable price. The Cap-O-Matic uses a cap activation mechanism to extend and retract the pen point, and its pressurized PR ink refill cartridge ensures it will write in virtually any condition—upside down, underwater, through grease, in extreme temperatures (-30°F to +250°F), and on almost any surface. With a lifespan three times longer than the average pen, it is built for durability and precision, even in space.

Key Features:

• Pressurized ink cartridge for versatile writing in any condition
• Single-hand activation for ease of use
• Writes upside down, underwater, and through grease
• Works in extreme temperatures (-30°F to +250°F) and in zero gravity
• Lifetime warranty against manufacturing defects
• Material: Brass
• Finish: Matte Black Powder Coat
• Length: 133.35 mm (open), 130.48 mm (closed)
• Diameter: 9.65 mm

The Fisher Space Pen M4B Cap-O-Matic is a must-have for those who demand top-tier performance and reliability in their writing tools.

The Fisher Space Pen was created for space exploration, designed to withstand extreme conditions. After rigorous NASA testing, it debuted on the Apollo 7 mission in 1968 and has been used on every NASA manned spaceflight since. It’s also used aboard the International Space Station and by Russian and Chinese space programs.

With a sealed, pressurized ink cartridge, the Fisher Space Pen writes in extreme conditions—underwater, in zero gravity, and in temperatures from -30°F to +250°F. It lasts three times longer than regular pens and has a 100-year shelf life, making it perfect for professionals in various fields.