Introducing the TWSBI Diamond 580 Iris Fountain Pen – the perfect writing tool for any discerning writer. Its piston filler mechanism, clear demonstrator body, rainbow-colored iridescent trim, and stainless steel nib accented with iridescent color combine to give it a truly unique and eye-catching aesthetic. Additionally, its steel nib ensures a smooth and precise writing experience. With its stylish and elegant design, this pen is sure to turn heads and make a statement every time you use it. The unique and varied shades of the iridescent color make each pen one of its kind, so no two pens are exactly alike – making this pen the perfect way to express yourself. Get the TWSBI Diamond 580 Iris Fountain Pen today and experience writing like never before.