72 Colors Professional Oil Based Colored PencilsGet this complete set of 72 professional colored pencils and discover all of the original color combinations you can make. The break resistant cores allow you to layer colors and shade your artwork without having the tips break while you work. These smooth and highly pigmented pencils make blending. layering. and mixing colors a breeze. BREAK RESISTANT OIL CORES Durable. highly pigmented pencils that can withstand heavy shading and layering. Also. the