Pentel Ain Stein Lead Refill are 10% stronger than any other Pentel refill led thanks to a ceramic cell structure. The innovative molecular ceramic frame which holds the lead together firmly from the inside making it smoothest, strongest, sharpest pencil lead. The lead is also designed to be smear resistant, allowing to have beautiful, clear writing and smudge free hands.

The leads are supplied in handy plastic swivel-top tubes and are suitable for all Pentel mechanical pencils. Available in 0.3 MM, 0.5 MM, 0.7 MM & 0.9 MM lead sizes in B, 2B, 3B, 4B, HB, H and 2H grades.