The Faber-Castell E-Motion Fountain Pen Writing Module has a nib in F. The nib is made of stainless steel. Compatible with standard cartridges and converters. The writing module is suitable for the fountain pens of the Faber-Castell series E-Motion. 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 by TÜV Rheinland in 2015, Faber-Castell can describe itself as the world's first company in the industry as completely climate-neutral and thus makes a real contribution to climate protection.