Item Type: Electric Eraser Material: Plastic Battery: 2 x 1.5V AAA Battery (Not Included) Package List 1 x Electric Eraser (Assembled Thick Eraser Metal Holder) 2 x Thin Eraser Plastic Holders 10 x Thin Eraser Refills 12 x Thick Eraser Refills 1EFFICIENT ELECTRIC ERASING: The rotating design of this eraser makes erasing easier and improves efficiency, giving your sketchwork a clearer finish. 2PRECISE STAIN REMOVAL: Specifically designed for sketching, it effortlessly removes graphite and colored pencil stains, ensuring your sketchwork looks cleaning. 3ENHANCE DETAILING: The design of the eraser helps you create more intricate drawing and sketching details, making your artwork more vibrant and lifelike. 4COMFORTABLE GRIP: It is ergonomic design, making it easier to use and enhancing the pleasure of your drawing experience. 5PLASTIC MATERIAL: Made with excellent quality materials, it is built to withstand long term use without deformation or easy breakage, ensuring your artistic journey lasts longer.