Electric Eraser, izBuy Eraser Kit 2 AAA-Battery Operated Precise Pinpoint Erasing Machine for Artist/Draftsman/Animators/Architects,Fantasy 10pcs Original Eraser Refills Included, Grey(8301) Cordless, Compact and Lightweight - Offers precise control and ideal for drawing, drafting, architectural plans, arts and crafts. Battery operated eraser - Just install 2 AAA batteries & follow the directions & it works like a charm. One-button Operation - Simple push of the button and a light touch are all that's required to remove marks,without even having to go over the lines twice. Refillable & Adjustable - Save time, save money. The worn tip can be replaced (10 spare refills are included) and adjusted to the length you feel most comfortable(3 mm is recommended for maximum utility rate) This izBuy Electric Eraser brings out a new strengthen version correction tools for you! It is more precise than the pencil eraser at erasing away those tiny errors