The Matthew Martin 500 Series Pen is well-balanced and has a robust build. The pen features a fine thread pitch cap that can be threaded on the non-writing end as well. The reverse side has an effective point for striking and compliance techniques. Excellent writing is facilitated by a replaceable medium black Fisher Space Pen cartridge, and, if desired the pen will accept Parker style refills as well (sold separately).
This model features an aluminum-silicone bronze grip and cap, while the body is quadruple woven carbon fiber. Titanium is utilized on the tip, end piece and striker.