Extend the life of your favorite pencils and save money with a Derwent Pencil Extender Set. The silver extender fits your larger-sized pencils up to 8mm, including Derwent Pastel, Colorsoft and Artists' Pencils. The black extender fits standard-size pencils up to 7mm, including Derwent Graphic, Watercolor and Studio Pencils. Both extenders feature an adjustable screw fitting to hold your pencils securely and a soft-touch coating on the barrel for a firm grip. It can also make shorter pencils feel more balanced and allow for a firmer grip. You can also use it as a pencil cap.