This set of 12 sketch pencils comes in a variety of shades, suitable for creating beautiful masterpieces with smooth shading to detailed schematics with precise, even lines. The 3.8mm diameter lead core is durable, resisting breakage and crumbling, while the different degrees of hardness give a reliable range from the lightest greys to the darkest blacks. This set includes hardness degrees 4H, 3H, 2H, H, F, HB B, 2B, 3B, 4B, 5B and 6B. The hexagonal shape makes these drawing pencils comfortable to use for hours at a time. Each pencil has a colored stripe down the side and color-coded ends.