• Hardness of LH-100 is 5H (pencil hardness). Ink film strength (hardness) changes depending on media or print condition. Please confirm beforehand.

*Pencil hardness (in order of increasing hardness):
6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H

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