Limited Edition 011

The Mark One is a machined writing instrument built around a standard refill cartridge and finished to last decades. Studio Neat machines each pen from solid bar stock—brass or steel—then numbers them as part of a limited production run. The result is a tool that feels substantial in hand and writes without requiring thought.

Both versions accept Parker-style ballpoint or gel refills, so you can swap cartridges as your preference changes. The brass model develops a patina over time as oils and handling darken the surface. The steel version holds its brushed finish and resists wear. Each pen measures roughly 5.5 inches capped and weighs enough to anchor your grip without tiring your hand during long sessions.

The cap threads securely and posts to the back while you write. The clip is machined from the same material as the body, not added afterward, so there are no weak points or flex. Studio Neat marks each pen with its production number, making this edition distinguishable from any future run.

This is the kind of pen you stop losing because it matters enough to keep track of. It works for notes, drafting, and daily carry in a bag or pocket. The refill standard means you can find replacements in most stationery shops, and the machined construction means the pen itself outlasts the ink by years.