Derwent Pencil Extender Set, Silver and Black, For Pencils up to 8mm, 2 Pack
By using a pencil extender you can use almost every bit of a wood case pencil before having to throw it away. Derwent Pencil Extenders are available in two sizes. The black extender is for use with standard sized pencils, up to 7 mm, including Derwent Graphic, Watercolor, and Studio.