Features: Made of high quality plastic, durable and very convenient. This compact electric eraser can erase small areas of artwork quickly and accurately. Moderate size fits hands perfectly, portable and comfortable to hold. Equipped with 10 pcs 2.3mm eraser refills and 12 pcs 5mm eraser refills that you can change the size of the core, and the length of the core can be adjusted. Labor-saving and efficient, perfect stationery for art students, teachers and those who love to draw. Specification: Brand: Tenwin Material: plastic Length of electric eraser: 17.5 cm/6.8in Eraser Refill Diameter: 2.3mm/0.01in, 5mm/0.2in Battery Model: AAA Batteries*2 [Not Included) Color: Gray, Black, White [Optional) Package List: 1 x Electric Eraser [battery not included) 10 x 2.3mm Eraser Refills 12 x 5mm Eraser Refills Note: 1. Please allow 1-3cm error due to manual measurement. Thank you for your understanding.2. Monitors are not calibrated same, item color shown in photos may be slightly different from the real item. Take the real one as standard.Color BlackSize large cone size