Electric Eraser Kit: Electric eraser kit comes with 42 large refills and 50 small refills for long-term use. One-button operation: Remove marks with a single touch. 2 eraser designs: Our electric eraser includes 2 eraser holders that can hold φ2.3mm and φ5mm erasers. Use the larger one to create dense highlights and the smaller one to erase small parts like hair. Perfect for artists and professionals. Comfortable handle design: Instead of a large rectangle, these automatic headphones are round, which is more comfortable to hold. Powerful power: Circular motion and powerful motor allow you to erase the target area efficiently and accurately. Battery-powered eraser: Powered by 2 AAA batteries (not included), this electric eraser helps you free your hands for drawing and painting. Professional electric eraser for work, drawing and learning. Perfect tool for artists, students, teachers, children and adults, easy to use. Insert the battery: 1. Press the cover by pressing the arrow on the cover. 2. Insert 2 AAA batteries according to the positive and negative markings. 3. Close the cover. Usage: 1. Press the button and the eraser will start to rotate. 2. Turn back and forth to remove unnecessary figures. Replace the eraser: 1. When the eraser runs out, pull out the eraser holder. 2. Then pull out the erasers about 3 mm. 3. Back to original, can be reused. Details about electric eraser. Package includes: 1 x Electric Eraser, 42 x 5mm eraser refills, 50 x 2.3mm eraser refills. Specification: Material: Plastic. Black color. Weight: 80 grams. Size: 223 x 96 x 18 mm. Warnings: 1. Avoid putting parts in your mouth. 2. Powered by 2 AAA batteries (not included). 3. For long-term use, remove the battery when not in use. Slim pen: This automatic earbud is not a large rectangle, but a round shape that is more comfortable to hold. > 2 eraser sizes: Larger (φ2.3mm) and smaller (φ5mm). Use a larger one to create thick highlights and a smaller one to erase small parts like hair. Electric eraser kit: Our electric eraser kit comes with 42 larger (Ø 5mm) pins and 50 smaller (Ø 2.3mm) pins for long-term use.