The multiple sizes are enough for different aspects of your sketch drawing artwork.The stumps and tortillions set is made of high quality soft compressed gray paper, suitable for smudging, creating , softening line, hazy effect, blending or smoothing pastel, charcoal, and pencil drawing artwork.Useful tool for artist drawing, sandpaper pencil sharpeners can make your charcoal, pencils or your stumps and tortillions sharpen. This charcoal blending stumps and tortillion set can be sharpened by sandpaper blocks.Use for blending pencil, pastels, and charcoal. Keep the stumps pointed by sharpening with a sanding block.The kneaded eraser can be used to creare any shape that makes the surface seem bright and in the prosess of sketching.Colour: as shownMaterial: paperPackage Contents:6 x Carbon strip (soft/medium/hard 2)1 x Eternal Pencil1 x No need to sharpen pencil3 x Refill2 x Eraser1 x plastic rubber1 x sponge rub2 x sandpaper board8 x Paper rub pen9 x Sketch drawing pen1 x Pencil extender1 x Storage bagOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.