Pilot Neox Graphite 40 leads per pack x 10 packs New, unopened. 0.5mm B hardness black leads, 10 leads per set, perfect for mechanical pencils. Brand: PILOT Model: neox GRAPHITE Lead diameter: 0.5mm Hardness: B Quantity: 10 leads per set Thank you for viewing. Type: Mechanical pencil leads Lead/Darkness: B