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...

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...