Regal

Regal is an American maker of fine fountain, ballpoint, and rollerball pens. Their fountain pens take a standard international ink cartridge or piston converter. Their ballpoint pens take a C1 or G2 standard refill, while their rollerball pens take a proprietary rollerball refill that is slightly longer than the standard ceramic ISO size. Many standard rollerballs will fit their pens, however.

Manufacturer’s Website: Regal