Your pencil lines can be cleaner and sharper than ever with the Pilot Neox High-Purity Graphite Pencil Lead. The high quality graphite in the lead has very few impurities, and the bond between the carbon atoms is stronger than ever. The lead also makes use of the lubricating properties of graphite crystal to ensure a smooth writing experience. The results are clear, sharp, dark lines that will glide smoothly across your paper. Multiple lead grades available.