Believe it or not, but you can actually tell the quality of a clicker pen by the sound it makes. Cheap plastic ones make an audible tick, whereas high-quality all-metal ones - like Inventery's Mechanical Pen - are satisfyingly silent. And on top of a superb Schmidt deployment, this EDC pen also features an all-brass unibody construction at 5" in length, comes with a Schmidt P8126 cap-free rollerball refill, and has both a lifetime warranty and individual serial number for each pen built. Step up your pen game with this offering from Inventery.