Faber-Castell NEO Slim Fountain Pen is made of metal. Includes a standard black ink cartridge. The fountain pen can also be used with a piston tank converter. With metal shaft. With round grip The slim barrel and the spring-loaded metal clip ensure a high writing comfort. As one of the oldest family-run industrial companies in the world, Faber-Castell is one of the leading manufacturers and marketers of high-quality products for writing, painting and creative design. The company owes its position to the traditional commitment to the highest quality and the large number of product innovations and improvements. According to a scientific study carried out by TÜV Rheinland in 2015, Faber-Castell is the world's first company in the industry to be completely climate-neutral and thus makes a real contribution to climate protection.