This set of Derwent Pencil Extenders contains two different sizes, fitting pencils with a width of 8mm (silver extender) and 7mm (black extender).
By using a pencil extender you can use almost every bit of a pencil before having to throw it away. It also makes shorter pencils feel more balanced and allows for a better grip.
These Derwent Pencil Extenders have a robust screw fitting to hold the pencils securely and a soft touch coating on the barrel for improved grip. The extenders fit round and hexagonal shaped pencils.