Keep your favorite mechanical pencil writing with these Smudge Proof, Nano Diamond Infused lead refills.
- 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
- Smudge proof technology keeps your artwork and writing clean, without any messy smears
- Make sure to check compatibility with your favorite mechanical pencil before ordering
- uni-ball Nano Diamond Mechanical Pencil Lead refills available in 0.5mm and 0.7mm