Milan MAXI HB Graphite pencils with large eraser, ideal for industrial use. 3.5mm lead. Ergonomic triangular shape. They are in the middle of the HB graphite hardness scale, recommended for writing and drawing. The lead offers a uniform stroke and is anti-break, thanks to the Lead Protection System (LPS) that protects the lead due to its adhesion to the wood. Wood comes from sustainable plantations.