1. Premium Material The blending stumps and tortillions are made of premium rolled compressed gray paper, tightly wrapped for dense, durable performance. The hybrid sponge pens are built from high quality sponge, felt and ABS, allowing medium to spread easily for smooth shading, creating depth and shadow. 2. Package Includes Includes: - 2 hybrid dual tip washable sketch eraser sponge brushes - 6 hybrid sticks and nibs (numbers 1 through 6) - 1 sandpaper sharpening block This set covers most art needs and supports producing vivid results. 3. Easy to Use The sandpaper pointer sharpens pencils, charcoal, or your stumps and tortillions. Rub the blending pencil on the sanding sticks with even grit to sharpen tortillions neatly, keeping tips pointed and clean. 4. Blending and Texture Effects The blending sponge enables a variety of texture effects in drawings, especially atmospheric elements such as clouds or mist. Made of soft foam, it can apply or remove graphite or charcoal to achieve the desired texture. Use scenarios - Portraits and still lifes: use the blending stumps and tortillions with graphite or charcoal to build realistic depth, value changes, and smooth transitions between tones. - Landscapes and atmospherics: employ the sponge for soft gradients to recreate clouds, mist, and distant tones, enhancing mood and distance. - Texture and edge control: apply or lift medium on textured or toned paper to create interesting textures, soft edges, or precise highlights and shadows.