Ystudio

Ystudio is a Taiwanese design studio that makes interesting designer pens. Their fountain pens take standard international ink cartridges or a special piston converter. Most of their ballpoint pens take their own branded Parker style G2 refill, although any G2 refill will fit. They have one pen that takes a Cross style C1 refill. Their rollerball pens are shipped with Schmidt 5888 rollerball refills, but any standard ceramic rollerball (RB) refill should fit their pens.

Manufacturer’s Website: Ystudio