- Premium materials for long-lasting use: Crafted with sponge, felt, and a sturdy plastic pole. The black tip is sponge for smooth blending, while the white tip is felt for precise halftone transitions. The plastic pole is durable and washable, enabling reuse. - Unique double-tip design: Larger pen features a black sponge tip for shadow-side transitions, while the white felt tip blends halftones into light and dark areas. The smaller pen has a black tip for detailed work, enhancing sketch dynamism. - Versatile for all artists: Suitable for students, beginners, and professionals. Great for artworks, school assignments, and daily crafts. Enables effortless blending and coloring to create gradients and shading. - Convenient sandpaper pencil sharpener: Includes a sharpener that sharpens charcoal, pencils, stumps, and tortillions, grinding solid pigment into powder to keep tools ready for precision work.