This battery-operated eraser offers precision and speed when correcting small areas of work. It can also be used to create patterns and shapes as well as being a useful drawing tool. It is comfortable to hold, and the top-mounted on/off button is perfect for both right- and left-handed use.Details: 12 battery eraser sets Top-mounted on/off button Includes 8 refill erasers Requires two AAA batteries (not included)