• Ain Strein is Pentels most recent refill lead innovation

• Brilliant new leads have a ceramic frame

• Holds the lead together firmly from the inside

• The swivel top tube makes dispensing quick and easy

Pentel is a pioneer of graphite lead research. Pentel Ain Stein is the most recent refill lead innovation, these brilliant leads have a ceramic frame that holds the lead together firmly from the inside, making it on average 10% stronger than Pentel original refill leads.