100% LIGHFAST – Revolutionary oil-based core creates rich, vibrant color. 100% lightfast, all colors are professional quality and comply with ASTM D6901 and Blue Wool Scale ISO 105. REVOLUTIONARY CORE – The core is resistant to prolonged color change, ensuring artwork will not fade. The core sharpens to a fine, long-lasting point for detailed drawing and layering techniques. COLOR BLENDING – With their rich and creamy texture, these pencils are highly blendable. Colors can be mixed on the page to create a paint-like effect. Perfect for still-life drawings. RICH COLOR SELECTION – Pencils come in a tin containing 12 colors. With quick and opaque color laydown, you can produce bold, expressive drawings. DERWENT HERITAGE – Our innovation comes from an understanding of artists. Since 1832, we’ve produced a range of quality art materials, many of which are made in our British manufacturing plant.