MONO eraser is the most popular product line in Japan, accounting for 50% of the eraser market share for offices and schools in Japan. For more than 50 years, Tombow has continuously improved to bring quality eraser products and a special experience to customers.
 Mono rubber gum from Tombow from Japan has always been one of the world's top quality gums since it was introduced to the market in 1969. Today in Japan, the name MONO is also synonymous with gum.
 Mono black eraser (black eraser PE-01AB) : Similar to the regular Mono line, suitable for people who do not want to see stains on the eraser.