High quality drawing pencil. Special lead formulation for results with a metallic luster in a wide variety of grey tones. Particularly suitable for writing, drawing, sketching and hatching as well as for professional graphic and artistic applications on paper and matt drawing film. High break-resistance through special lead formulation and super-bonded lead Lead diameter: 12B: approx. 4.5 mm, 11B-6B: approx. 3.6 mm, 5B-3B: approx. 2.5 mm, 2B-10H: approx. 2.0 mm Lines reproduce well Wood from PEFC-certified, sustainably managed forests Why we love these: Lumograph pencils hold a sharp point and take a lot of pressure. They're the ideal pencil for technical drawing or when you are using rulers or other tools. The hexagon shape keeps them from rolling around on your worksurface.