STAEDTLERMarsmicrocarbon2501.3mmHB - Pencilleadrefills - 4 Tubes / Pac...STAEDTLER Mars micro carbon 250 1.3mm HB - Pencil lead refills - 4 Tubes / Packs (4 * 6 Leads) HB - 4 tubes - 6 leads per tube - Mechanical pencil lead for use on paper and drawing card - High break resistance due to flexible lead - Smooth-gliding lead...more