Description the original grafton is machined from 6061-t6 aerospace-grade aluminum the same alloy used in aircraft and structural components into a 5.7-Inch, 11mm-diameter pen at 0.9Oz, made to write like a desk pen and carry every day. The 11mm diameter and the deep machined groove grip give your fingers a set place to sit. I keep the grafton pen everywhere i need one vehicle, office and briefcase. Great quality and easy to refill with a variety of ink inserts. The quality will outlast me for sure. Geoffrey s. Backed by everyman's built for life guarantee built for life, guaranteed for yours. The weight and balanceat 0.9 Oz with an 11mm diameter, the grafton has the weight of a tool in your hand, with the deep-groove grip under your fingers. The clip is bolted on.Secured by two hex-head screws not snapped on, not molded in. It holds to a shirt pocket, a notebook spine or a jacket pocket. We don't decide what you write with.Pilot g2, parker gel, parker ballpoint, fisher space pen, monteverde, or our own metal gels in 0.5Mm and 0.7Mm. Swap the spacer and spring and it takes longer refills too. Gel or ballpoint. Your choice.Our metal gels are water-based the reason they write the way they do, and the reason they don't love sitting in a dry drawer for a year. Every grafton ships with the 0.7Mm black metal gel. If you fly often, work outdoors, or live somewhere arid, add a 1.0Mm ballpoint to your order and swap it when it arrives ten seconds, no tools. Same pen, different ink...