STAEDTLER Mars Lumograph Jumbo Pencils are made to the same premium quality as the regular sized Mars Lumograph pencils. Featuring a special lead formulation for results with a metallic lustre 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 or matt drawing film. Lines reproduce well with the large hexagonal barrel providing a comfortable grip. Note the flatter the angle in which you hold the pencil, the easier the colour application. With the right positioning of the hand you will be able to create smooth transitions between light and dark shading. Due to the larger pencil size they are suitable for those who draw and sketch on a larger scale. They have a high break resistance through the special lead formulation and super bonded lead. Lead diameter is approximately 5.3mm.