Instructions for use: 1. Insert the pencil directly. 2. Shake the handle clockwise to sharpen the pencil. 3. Shake the handle counterclockwise to exit the pencil and complete the sharpening. Spring is added to the structure, and the pen can be automatically corrected to prevent shaking. The upgraded gear structure is less prone to making loud noises New hand pencil sharpener, automatic pen feeding design, simple and labor-saving, safe and efficient, more convenient and smooth pencil sharpening; Suitable for various pen shapes: triangular, hexagonal, round, etc; Suitable for pencils, colored pencils, charcoal pens, etc. ranging from 6.9 to 8mm Using alloy steel hobs, sturdy and durable, smooth cutting, smooth cutting surface, easy cutting, automatic elimination of broken core design, not easy to break the core and get stuck, with a pen sharpening frequency of over 3500 times Adjustable pen tip thickness design, rotating the adjustment knob on the rear rocker arm can cut pencils of different thicknesses to meet your various needs Selected ABS material, sturdy, wear-resistant, and resistant to falling; Large capacity dander box, drawer type, easy to clean, not dirty hands; Anti slip bottom mat, more stable, anti slip handle, more comfortable