Pica Fine Dry Graphite lead HB 7030  for most surfaces  Ideal for fine and precise marking, without sharpening thanks to special lead diameter of only 0.9 mm Not suitable for smooth and glossy surfaces For precision without sharpening Its integrated large eraser enables quick correction of markings Diameter: 0,9 mm, Length: 60 mm Refill box with 24 leads 0.9 In new robust refill box: No risk of losing the cap, as it is opened by turning.