Royal Brush-Clamshell Art Sets: Sketching Pencil With Sketchbook. Essentials by Royal & Langnickel are the must have artist materials to begin exploring your artistic side! This 9x8-1/2x1/2 inch package contains three charcoal pencils, eight graphite pencils, one solid graphite pencil and one sketch pad. Conforms to ASTM D4236. Imported.