1 x refill for rollerball, ink colour: black, line width: 0.7 mm, rollerball refill from Online, also for Faber-Castell, Senator, Schneider, etc., ISO 14145-2, metal housing, ceramic ball : Amazon.de: Stationery &
Faber-Castell Ceramic Rollerball Pen Refill - Black | JetPens
Amazon.com : 4 X Faber-Castell 148712 Ceramic Rollerball Refill Black : Office Products