Sheaffer

Sheaffer is an American maker of fountain, ballpoint, and rollerball pens. They are currently a subsidiary of A.T. Cross. Their fountain pens take a standard international ink cartridge, a proprietary size cartridge, or a piston converter. Their ballpoint pens take C1, G2, D1, or a proprietary refill known as the K style. Their older rollerball pens take a proprietary refill, while most standard ceramic rollerball refills will fit their newer pens. They also make some refills that will fit Cross Ion, Matrix, and Selectip pens.

Manufacturer’s Website: Sheaffer