Uni ball

Uni-ball (ユニボール, Yunibōru) (stylized as uni-ball) and Uni (ユニ, Yuni) are brands of pens and pencils,[1] made by the Mitsubishi Pencil Company Limited (Mitsubishi Enpitsu Kabushiki Gaisha) of Japan. The brand was introduced in 1979 as a rollerball pen model, then expanded to the rest of Mitsubishi Pencil products.