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Mechanical Pencils
Keep your favorite pencil writing with these Nano Diamond Infused pencil lead refills for extra durability.

  • Extra durable diamond-infused lead is stronger than standard lead, delivering strikingly dark marks
  • Nano diamond lead is useful for school work, art projects and note-taking
  • uni-ball Nano Diamond Mechanical Pencil Lead refills available in 0.5mm and 0.7mm
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