Diplomat Metal Rollerball Refill
- Length: 111.1mm (4.375″)
- Manufacturer’s website: Diplomat Pens
The Diplomat Metal Rollerball is a rebranded Schmidt 5888 Rollerball refill. This refill will fit most pens that take a standard rollerball (RB). It is available from Diplomat in black or blue ink in a medium line width. Schmidt offers the 5888 in additional line widths and colors. Most pen and refill makers offer substitutes for this refill in a metal or plastic body.