Package Includes - 2 Hybrid Dual Tip Washable Sketch Eraser Sponge Brushes - 6 Hybrid Sticks and Nibs (No. 1-6) - 1 Sandpaper Sharpening Block Material - Blending stumps and tortillions are made of high-quality compressed paper and roll paper, tightly packed and strong, not easy to scatter or break, with a balanced soft and hard feel for durability. - Hybrid sponge pens are made of high quality sponge, felt and ABS. Item Features - Paper wipe pen: can wipe artwork, soften lines, mix colors, create shadows and dark areas and blur effects in paintings, and can add dull or soft effects to engineering drawings. - Sandpaper sharpening block: can sharpen pencils, charcoal and stumps pen. - Sketch rubbing sponge: used for creating a variety of texture effects in a drawing, especially useful for atmospheric effects such as clouds or mist. Made of soft foam and can be used to apply or remove graphite or charcoal to create the desired texture. Use Scenarios - Shading and blending: use the paper wipe pen to soften lines, blend graphite, and build subtle shadows in sketches or drawings. - Texture and atmosphere: use the sketch rubbing sponge to add clouds, mist, or other atmospheric textures, or to apply/remove graphite and charcoal for desired texture. - Finishing and maintenance: use the nibs for precise strokes, and use the sandpaper block to sharpen pencils, charcoal, and stumps pen for continued accuracy.