Electric Eraser Kit: The electric eraser kit comes with 42 large refills and 50 small refills for long-term use; One-button operation: just press the button to remove marks 2 sizes of design erasers : Our motorized eraser includes 2 eraser holders, which can accommodate 2.3mm and 5mm erasers. Use a larger eraser to create thick highlights, and a smaller eraser to erase small areas like hair. Ideal for Artists and Professionals Comfortable Grip Design: Instead of a large rectangle, this automatic headset has a round shape for a more comfortable grip Powerful Erasing Power: Circular motion and powerful motor allow you to erase efficiently and precisely Erase Target Area Battery Eraser: This electric eraser is powered by 2 AAA batteries (not included), which can help you free your hands while drawing and pass through the drawing"