Comes with 10 Replaceable Pencil Erasers Portable Automatic Eraser Battery Electric Eraser [Contents] The Blue Electric Draft eraser includes 1 set of 10 replacement parts and 1 small fan (batteries not included). These parts can be easily replaced and used anytime, anywhere to meet different needs. The transparent protective cover on the front provides excellent protection. Our erasers are made of high-quality rubber and plastic, making them environmentally friendly, non-toxic, easy to use, and durable. The eraser is easily removed and replaced for long-term use. [Unique Design] This eraser features an ergonomic design with a comfortable handle for easier use. It allows for smooth and accurate cleaning with minimal pressure, without damaging the paper, allowing you to easily erase every detail. [Easy to use: Manual or Automatic. Manual mode is ideal for erasing small details, while the automatic mode allows for faster operation and prevents the need for automatic release, allowing you to quickly erase large areas.] You can choose which mode to use based on your needs. [Wide Applications] Our mini design is small, lightweight, and portable. Suitable for painting, office, or school tasks, it is also an excellent aid for children, artists, designers, architects, and students in drawing landscapes, animals, or revising sketches or drawings.