- Durable Construction: Made with an alloy steel blade for exceptional durability and wear resistance, significantly reducing the risk of breakage. The ABS resin body offers outstanding impact resistance and drop protection, ensuring long-lasting use. - Automatic Calibration: Features a convenient automatic calibration function that allows for direct insertion of pencils with a diameter of 6.9-8mm. The built-in spring mechanism automatically adjusts the pencil's position for effortless operation and optimal sharpening performance. - Adjustable Thickness: Easily customize pencil tip thickness with five adjustable settings. Simply turn the button located on the back handle. This versatile sharpener accommodates various pencil shapes, including triangular, hexagonal, and circular, making it suitable for different pencil sizes. - User-Friendly Design: The intuitive design simplifies the sharpening process. Just insert the pencil and twist the handle to achieve a sharp point. This encourages children to sharpen their own pencils, enhancing their practical skills and independence. - Practical Applications: Ideal for students, artists, and professionals who require precise pencil sharpening for schoolwork, drawing, or drafting. Perfect for home, school, or office use, this sharpener meets diverse sharpening needs with ease.