Derwent Water Soluble Graphitone Mixed Media, Pack, 8 Count (0700662) The perfect introduction to Derwent water soluble Graphite ranges Pack includes a pencil shaped stick of artist quality water soluble graphite and blocks of graphite Use the pencil in a traditional fashion or break off chunks of graphite Graphite blocks are 8mm square x 75mm long with impressive covering power Pack includes 2 Water Soluble Graphite, 2 Graphic Pencils, 2 Graphite Blocks, plastic eraser and sharpener