24 PCK Pentel Super Hi-Polymer Lead Refill .9mm Thick B, 15 Pcs Lead/Tube 50-9-B

These Refill Leads fit the complete range of Pentel Mechanical Pencils. The composition of the hi-polymer lead is synthetic resin, graphite, and carbon, which give a very strong and flexible lead.24 PCK Pentel Super Hi-Polymer Lead Refill .9mm Thick B, 15 Pcs Lead/Tube 50-9-B