- STEIN stands for "Strongest Technology by Enhanced SiO2 Integrated Network".
- The Pentel Ain STEIN Pencil Lead features a reinforced silica core that makes the Stein Pentel's improving strength, smoothness, consistency and darkness.
- Twist the top of the container to uncover a small hole which the leads are dispensed through.
- 60mm length.
- 40 leads per tube.
- tube size : W20 x D6 x H78 (mm) * 5.7g (coloured lead : 5.2g)
- Available in 4B, 3B, 2B, B, HB, HB Hard and HB Soft, F, H, 2H, 3H and 4H hardness.
- Red and Blue coloured lead (20 leads per tube).
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