Introducing the X-pen
The X-pen is machined out of 6061 aircraft grade aluminum and uses a felt tip pen called the Pilot razor point. We made this pen for designers, architects, engineers, and do it yourselfers. Its small compact size fits in pockets and the. pens diameter makes it very comfortable to hold. We came to the .43 conclusion based off a series of prototypes and asking our friends to try them and pick which one they liked best. The result was the .43in diameter x 4in pen.