Cretacolor electric eraser The eraser allows you to erase graphite lines accurately and quickly without smudging (white = soft; gray = hard) White eraser (soft) to erase smoothly and precisely; Gray eraser (hard) for rough erasing on resistant bases. Also erases on foil. The battery-operated eraser guarantees precise and fast erasing, is economical and easy to use. Can be used to refine lines and edit small areas. Brand: Cretacolor