Box of 5 Graphite Leads 2.0 - HB - OHTO
- The width of the tip
- Hardness of the mine
Ohto was founded in Japan in 1929 and produced inks and dyes.
In 1949 the brand produced the world's first ballpoint pen with a chrome ballpoint.
In 1964 Ohto marketed the world's first rollerball pen.
Always at the forefront of innovation Ohto continues to produce all of its writing instruments in Japan.
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