Mars Lumograph Staedtler drawing set High quality drawing pencil Special lead formulation for metallic luster results in a wide variety of gray tones Especially suitable for writing, drawing, sketching and shading, as well as for professional graphic and artistic applications on paper and matte drawing film Great resistance to breakage thanks to the special formulation of the lead and its super bonding Available in 24 consistent fine graduations: 12B, 11B, 10B, 9B, 8B, 7B, 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H and 10H Lead diameter: 12B: approx. 4.5mm, 11B-6B: approx. 3.6mm, 5B-3B: approx. 2.5mm, 2B-10H: approx. 2.0mm The lines are reproduced well Wood from PEFC certified and sustainably managed forests Pencil sharpener recommendation: Tube pencil sharpener 511 001 or metal pencil sharpener 510 10 for ideal sharpening results