Description Box Size: Approx.78x20x6mm Degree of hardness: 4B\/3B\/2B\/2H\/B\/H Black Colour Leads: 0.5mm(diameter) 60mm(length) Features: 1 tube contain 40 pieces. Supplied in convenient swivel-top tubes. The lead has achieved dramatic improvement in strength and smoothness. It is standard lead used in all 0.5MM automatic pencils. Package Included: 1x 0.5mm 40 Leads For Mechanical Pencil