Finish: 2 finishes to choose from, Silver CNC glossy finish, and black tumbled finish. Delicate or rough, pick whatever you like. Application: It allows you to write anywhere you like. On glass, rock, underwater, or even in space, thanks to the Fisher space refill. Pen Function: Deployed using the spring-loaded bolt lever on the side of the pen. Push down and over and write away. A quick push back toward the clip and the spring takes over and snaps the tip back up. Construction: The whole pen body, tip, clip, and bolt are precision machined by CNC from 6AL4V titanium, aka Grade 5 titanium.