Spectrum Noir Pencil Blending Set 100% polyester Imported Convenient accessory set for sketching and blending with coloured pencils Includes: Soft eraser, pencil sharpener, blending stumps, ketch pencils, stump sander and storage walle Stumps are sand able after use, to create a clean blending surface 6 available sizes will allow you to blend the smallest of details right up to the largest of background Designed for stunning blending effects when used with blending solution, colored pencil & dry media