Itoya

Itoya is a Japanese maker of writing instruments, binders, albums, and other stationery products. Their ballpoint pens take their own branded Parker style G2 gel refill. Their rollerball pens take their own branded standard ceramic plastic or metal body refill. Any G2 refill will fit their ballpoint pens, while any standard ceramic rollerball should fit their rollerball pens.

Manufacturer’s Website: Itoya