These pencils are premium quality black lead pencils for writing, drawing and sketching on paper and matt drawing film. The wide range of degrees makes lumograph an ideal tool for artists and graphic designers. The lines reproduce well and the pencils are both easy to erase and easy to sharpen with any quality sharpener. The pencils are break-resistant due to lead formulation and bonded lead. The lead diameter is 2 mm. This is a tin containing 12 soft degrees: 8B, 7B, 6B, 5B, 4B, 3B, 2B, B, HB, F, H and 2H. Box Contains 12 x Mars Lumograph pencils in assorted degrees The wide range of degrees makes lumograph the ideal tool for artists and graphic designers Break resistant, thanks to bonded lead Lines reproduce well, easy to erase and easy to sharpen with any quality sharpener Tin of 12 pencils in assorted degrees (8B, 7B, 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H); packaging may vary to image shown