Royal Brush-Clamshell Art Sets: Pastel 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 four willow charcoal, four pastel pencils, three graphite pencils and one sketch pad and one sketch pad. Conforms to ASTM D4236. Imported.