Staedtler mars lumograph is a premium quality drawing pencil. The pencil has a special lead formulation for results with a metallic lustre in a wide variety of grey tones. The mars lumograph is particularly suitable for writing, drawing, sketching and hatching as well as for professional graphic. The lines reproduce well. The art pencil set contains 24 lumograph pencils with 20 pencils of lumograph blue and 4 degrees of lumograph black. .