TWSBI Diamond 580 Iris Fountain Pen

The TWSBI Diamond 580 comes with a benchmark piston ink-filling mechanism and has all detachable parts. The clear demonstrator barrel allows you to see your ink color and remaining ink level. It comes with a stainless steel nib.

The TWSBI Diamond 580 is a classic fountain pen with a piston ink-filling system. By fusing the traditional mechanisms of the fountain pen with a modern industrial design, TWSBI has created an eye-catching fountain pen that is simultaneously appreciative of the past and relevant in the present.

The Iris has a clear demonstrator body, with a rainbow-colored iridescent trim, and a stainless steel nib accented with an iridescent color. *Due to the nature of this material, each pen can vary in color, making the pens unique and unlike one another

nib: steel

ink: piston fill, bottled ink