Rotring Multi Pen Ballpoint Refill - Fine - Black - Pack of 5 | JetPens
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? :
Cartucce rotring isograph 590217 nere: Cartucce china | Digital Area 102
LifeMaster Germania Rotring Stilo Master Set Liner/Matita Meccanica/Ricarica di Inchiostro/Inchiostro/Eraser/Bussola Progettazione Grafica set|erasable ink|ink erasereraser refill - AliExpress
Rotring Ball Pen Refill Medium Tip - Black (Pack of 1)