Introducing a CNC machined aluminum pen, made in the USA by Arizona-based Karas Kustoms. We're in love with it. It features a stainless steel clip, and threaded cap. Made from 6061-T6 Aluminum, it's the same aluminum used for aircraft fuselage, and has a tensile strength of at least 42,000 pounds per square inch. Translation? Even Superman couldn't break this pen. This pen takes the Pilot Hi-Tec C refills (and works with Parker compatible refills as well). Please note: the pen does not ship with a refill.