Koh-I-Noor Omega Coloured pencil - Silver are premium quality coloured pencils ideal for drawing, illustration, sketching, arts, graphics, etc. Omega pencils are 10 mm thick, with a 5.6mm lead and 175 mm long.The large cross section of the lead makes it ideal to cover large areas with color in broad strokes. Suitable for Artists, Illustrators, Graphic Novelists, Fashion Designers and Automotive Designers