Refill 2.0 for Mechanical Pencils, from the OHTO brand.
OHTO is a Japanese brand of pens and pencils founded in 1929. It is at the forefront of innovation in pen design. In 1949, OHTO designed the world's first ballpoint pen. In 1963, the brand designed the first roller ball. In order to have an optimal writing, OHTO develops its own inks.
OHTO also offers complementary products to its collection such as pencil sharpeners, mechanical pencil refills or refills for pens in different colors.