1.Package Includes:You will get 2 Hybrid Dual Tip Washable Sketch Eraser Sponge Brushes, 6 Hybrid Sticks and Nibs (16) and 1 Sandpaper Sharpening Block. Can meet most of your art needs. 2.Material:The blending stumps and tortillions are made of quality compressed paper and roll paper, tightly packed and strong, not easy to scatter and break, moderately soft and hard, and durable.Hybrid sponge pens made of sponge, felt and ABS. 3.Item Features:Paper wipe pen can be used to wipe artwork, soften lines, mix colors, create shadows and dark areas and blur effects in paintings, also add dull or soft effects to engineering drawings. Sandpaper can sharpen your pencils, charcoal and stumps pen. 4.Sketch Rubbing Sponge:The rub sponge is used for creating a variety of texture effects in a drawing,especially useful for creating atmospheric effects, such as clouds or mist. Made of soft foam and can be used to apply or remove graphite or charcoal to create a desired texture.