The pencil “lead” is actually a mixture of graphite and clay. More clay in the mixture makes the lead harder. A harder lead has a higher number. Pencils are numbered from 1-3 but most people use a ...
Mitsubishi Pencil, known for its uni brand ballpoint pens, pencils and erasers, offers products mostly priced under 1,000 yen ($6.63). Lamy, established in 1930, mainly markets ballpoint and ...