Staedtler Mars Carbon 200 Leads for lead holder - Gradation\ Hardness - HB- Length - 130 mm - Line Width - 2 MM - Pack of -12. Refill leads for all common lead holders 2 mm; For use on paper and drawing card. High break resistance due to flexible lead; Smooth-gliding lead, jet black lines. Manufacturing process without PVC - more than 90% based on natural raw materials. 12 leads per tube; ISO colour coding