Ti Pocket Pro: The Auto Adjusting EDC Pen (Zirconium)

This is the sole pen that can smoothly telescope to accommodate over 80 different refills without any guesswork, gaps, hacks, modifications, spacers, or tip-wiggle. The entire pen is constructed from titanium (no plastic parts) except for the o-rings. Its remarkably effortless ability to adjust in length to perfectly fit both parker-style ballpoint refills and standard rollerball refills without any visible gaps or hacks makes it a pen without equal