Hi-Polymer 100 HB Lead Pentel and Pentel Case is dirty This is Pentel's "Hi-Polymer 100" mechanical pencil lead. Lead diameter: 0.5mm Hardness: HB Length: 60mm Quantity: 40 leads Features: Dark, strong, and smooth writing feel Stored for a long time. I think it's unused, but even if it was used, I think it was only a few. It will be shipped via Yu-Packet Post Mini.