Features: Electric eraser kit has 2 sizes of eraser refills, 2.3mm and 5mm diameter, which can meeting the needs of detail and local multiple highlights. Working in high speed, strong erasing capacity allow you to erase the targeted effectively and precisely. Powered by 2 * AAA battery, no cable needed, one-button to control, easy to use.(Batteries are not included) Made of ABS material, durable to use. Ergonomic design, smooth surface, very comfortable to hold. Practical eraser, ideal for students, designers, artists for drawing, painting, sketching, drafting, etc. Specifications: Color: Black/ White/ Grey(optional) Material: ABS Power Supply: 2 * AAA Battery(Not Included) Item Size: 16.6 * 1.5 * 1.5cm/ 6.5 * 0.6 * 0.6in Packing List: 1 * Electric Eraser 2 * Clip Holder 12 * Big Eraser Refills(φ5mm) 10 * Small Eraser Refills (φ2.3mm)