The Helix Automatic Battery Powered Art Eraser is easy to operate with a push of a button and the precise eraser refills make details a snap! Perfect for artists drafters architects or anyone who needs detailed erasing because unlike manual erasers that must be rubbed back and forth the small powered eraser nub rotates in place with the push of a button for incredibly precise results. To operate simply hold down the top button and drag the rotating eraser tip across whatever graphite you would like removed. The pen-style design is great for getting into small spots on a drawing but still has enough power to easily manage large sections of erasing. Perfect for removing graphite from all common drawing & drafting papers the eraser runs on 2 AA batteries (not included) and includes 10 eraser refills that are PVC Latex and Phthalate free! Since its creation in 1947 Maped (Manufacture of Precision Articles and Drawing) has been creating innovative high-quality products that help reimagine the often traditional school and office markets. Maped is an expert in providing attractive school products with an assortment of ergonomic and eye-catching products tailored to the needs of the consumer and can be found in more than 125 countries around the world!