Built-in alloy steel sword, wear-resistant and durable. ABS resin body has high impact resistance and strong resistance to wear and tear. Automatic pen insertion function, convenient and fast, you can cut by inserting the pencil directly , all kinds of pencils with a diameter of 6.9-8mm can be applied, and the internal spring automatically corrects the position of the pencil. The five-step pen tip thickness can be fitted and the design allows you to adjust the thickness of the pen tip. You can turn the adjustment knob on the rear handle to sharpen pens of different thicknesses. It can be applied to pencils of different shapes such as triangles, hexagons and circles. The transparent trash can can be seen at any time and cleaned up in a timely manner. The soft mat design on the bottom increases friction with the desktop and stabilizes placement.