Type of writing instrument: Fountain pen Pen features/materials: Cartridge ink system This is a set of 3, including a ballpoint pen and a mechanical pencil. The fountain pen has never been used. It's old, but I think the quality is good. It's slim and doesn't take up much space. Total length: Approximately 13 cm, Maximum diameter: Approximately 1.2 cm Nib size: F Nib material: 18K The top and bottom colors are orange, as shown in photo 5.