
AIN STEIN LEAD REFILLS // 0.3 MM
Leads to refill any mechanical pencil with a 0.3 mm tip.
- 15 leads per tube
 - Thickness: 0.3 mm 
 - Hardness: HB
 - About 10% stronger than existing Pentel leads thanks to a ceramic cell structure
 - Smoother than other refill leads on the market