This model was developed to meet the needs of the European market! This line drawing pen uses a smear-proof water resistant ink. Features: This model has been developed to meet the needs of the European market with a habit of defending to strict environmental standards and disposable types. The pen itself is made with an aluminum body with excellent durability and attention to the texture and texture of the drawer. The nib and ink cartridge can be replaced with replacement parts (sold separately). The ink uses the same water-based pigment black (water resistant when dry) as the multi-liner.