Paul Fisher, a pen maker and inventer, created a pressurised ballpoint refill that would work in space. It will also write well on damp and dusty paper, greasy paper and in excessively warm or cold temperatures. The Cap-O-Matic takes this refill.
The Cap-O-Matic is available in either a Matte Black or Lacquered Brass finish. It has a retractable mechanism and measures 131mm long.