The TWSBI Diamond 540 Demonstrator Fountain Pen is a traditional writing instrument with a modern industrial design. The Diamond 540 has a piston filling system that holds plenty of ink and comes with a screw on cap, chrome trim and quality steel nib. TWSBI was the winner of a reddot design award in 2010 for their 530 Fountain Pen, the predecessor of the Diamond 540 Fountain Pen. This fountain pen comes with a small wrench and instructions for completely disassembling the pen. Also includes a small bottle of silicone grease for smooth operation of the pen. Packaged in a clear case. Pen weight approx: 1 oz. Size approx: 5 1/2" capped, 5 1/8" uncapped, 6 7/8" posted.
TWSBI item numbers: M7441750, M7441820, M7441890, M7442220