Adequate use and sharing: You will receive 12 mixing pens for 2 different sizes of painting, which is enough to use and meet your painting needs. Suitable for beginners, artists, and is an perfect painters and painting enthusiasts Double headed sketch wiping pen: The dual headed design of the mixed sponge pen design, the small sponge pen can help you adjust details and edges, the ocean sponge pen is suitable for area mixing, making shadows, with a black tip, and a larger tip for shadow side transitions, making it an perfect choice for preliminary mixing. The black tip of the smaller pen can be used to handle details, making it convenient to use Reliable materials: The washable friction sponge brush is made of high-quality sponge, felt, and plastic rod. The black tip is made of sponge, and the white tip is made of felt, which helps to mix different sides smoothly; The sturdy plastic shell ensures durability, comfortable grip, washability, and reusability. Please place the sponge pen in a well ventilated area to allow it to dry quickly Appropriate size: This sketch has 2 friction sponge brushes, with a larger pen size of approximately 0.47 inches/1.2 centimeters, a tip diameter of approximately 5.95 inches/15.1 centimeters, and a smaller pen size of 0.27 inches/0.6 centimeters/0.6 centimeters. The total length is approximately 5.51 inches/14 centimeters Practical and versatile: These washable sponge pens are suitable for painting activities, including but not limited to sketching, bamboo charcoal painting, pencil painting, traditional Chinese painting, etc. They are perfect and useful tools for art enthusiasts and students Colour: Material:sponge Package Contents: 12 * sponge brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.