- MONO Graph Mechanical Pencil It is a mechanical pencil equipped with a rotating eraser. It also has a "Freknock mechanism" that swings the shaft up and down to pull out the core, and a "Frelock" function that fixes the "Freknock" when t
– MONO Graph Mechanical Pencil It is a mechanical pencil equipped with a rotating eraser. It also has a “Freknock mechanism” that swings the shaft up and down to pull out the core, and a “Frelock” function that fixes the “Freknock” when t
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