Portable Automatic Eraser Electric Eraser Home Drawing Lovers Teachers School for Art Students Specification: Features: Made from plastic and very convenient. This compact electric eraser can erase small areas on artwork quickly and precisely. Moderate size suits hands perfectly portable and comfortable to hold. Equipped with 10pcs 2.3mm eraser refills and 12pcs 5mm eraser refills that you can change the size of the core and the length of core can be adjusted. Labor-saving and effective perfect stationery for art students teachers and those drawing lovers. Specification: Brand: Tenwin Material: Plastic Weight: 64g/2.3oz Electric Eraser Length: 17.3cm/6.8inch Eraser Refills Diameter: 2.3mm/0.01inch 5mm/0.2inch Battery Model: AAA Batteriesx2 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. Thanks for your understanding. 2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.