Faber Castell by Mitsubishi Uni Mechanical Pencil Lead Refills 0.5 mm F 12 Tubes

12 Tubes - each tube contains 12 leads. Graphite Reinforced Carbon Technology / Pressure-proofed, high-density, ultra-fine lead / Featuring quality, strength, darkness, and smoothness. Lead Hardness : F (A little bit harder than HB but a little bit softer than H).

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