High performance HB lead refills made with diamond-infused lead. Stronger, long-lasting material resists breakage to produce consistent vivid, dark lines and won't damage or smear documents. Compatible with most refillable mechanical pencils.
- High performance diamond-infused lead.
- Stronger, solid material resists breakage.
- Consistent vivid, dark lines.
- Compatible with most refillable mechanical pencils.
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