Product name: Vacuum inspiratory pen set Plate size: 11.5*7.5*4.5cm/4.53*2.95*1.77 inches Efficient and user-friendly: Our self-aspirating brushes take advantage of vacuum technology and instantly suck out with a simple press, thus accurately absorbing the stone. Accurate adsorption: The precise suction of the brush ensures that the stone stays firmly in the tip of the pen, preventing any displacement. This vacuum pen can be placed precisely and closely aligned with the canvas pattern. Clean and tidy: Traditional aspirated pens use wax, which leaves stains on the canvas and is difficult to clean. Our vacuum pens eliminate the use of wax, avoid stains, and keep the canvas clean and tidy throughout the painting process. Comfortable design: Ergonomic design, comfortable brush holding, reduce fatigue during long-term use. It is made of a strong material that maintains consistent suction and precise adsorption, making it a reliable tool. Suitable for all kinds of stones: This self-aspirating paintbrush is suitable for round, square and all sizes of stones. Its powerful vacuum suction ADAPTS to different shapes and sizes of stones, ensuring stable adsorption of all types of stones.