![Rotring 600 Ballpoint Pen, Black Barrel, 1.0mm Medium Point Refill, Black Ink for Writing, Drawing, Graphics and Calligraphy : Amazon.in: Office Products Rotring 600 Ballpoint Pen, Black Barrel, 1.0mm Medium Point Refill, Black Ink for Writing, Drawing, Graphics and Calligraphy : Amazon.in: Office Products](https://m.media-amazon.com/images/I/715IeygO7NL._SL1500_.jpg)
Rotring 600 Ballpoint Pen, Black Barrel, 1.0mm Medium Point Refill, Black Ink for Writing, Drawing, Graphics and Calligraphy : Amazon.in: Office Products
![Rotring 600....rollerball with cartridge. Never seen before. The rollerball mechanism is permanent and doesn't remove. That one replacement cartridge came with it. Anyone seen these before? What do I refill it with? : Rotring 600....rollerball with cartridge. Never seen before. The rollerball mechanism is permanent and doesn't remove. That one replacement cartridge came with it. Anyone seen these before? What do I refill it with? :](https://preview.redd.it/l1kh7lqr6n921.jpg?auto=webp&s=8c838d2c84dcb577015b25cd097f538633c75151)
Rotring 600....rollerball with cartridge. Never seen before. The rollerball mechanism is permanent and doesn't remove. That one replacement cartridge came with it. Anyone seen these before? What do I refill it with? :
![rOtring 600 ballpoint pen in Camouflage Green. In pictures, it can be mistaken for the black one. IRL, it has a cool dark green shade with a sort of golden sheen when rOtring 600 ballpoint pen in Camouflage Green. In pictures, it can be mistaken for the black one. IRL, it has a cool dark green shade with a sort of golden sheen when](https://i.redd.it/2wpan2s1d9m41.jpg)