This pack of pencils has 3 free Bi-Colour pencils giving 27 different shades in total. Eco Pencils are produced in a sustainable manner with 100% reforested FSC certified wood. Not only are they environmentally friendly, they also ensure superior performance, bright colours and the highest quality writing. The leads are break-resistant due to a special bonding process. The varnish used is water-based which is environmentally friendly. They also come with a free sharpener.