KOH-I-NOOR Fine Graphite Leads for 0.7mm Diameter 60mm HB Mechanical Pencil 12 PIECES OF 6 CM LEAD plastic storage tube KOH-I-NOORHARDTMUTH a.s.is one of the world leaders in the production and distribution of first-rate stationery for artists, schools and offices, using 100% FSC wood.