The original pencil sharpener requires the user to sharpen the pencil several times with both hands. I proceeded by thinking about the function and structure that makes it easier to sharpen pencils with one rotation. It is a pencil sharpener that can be sharpened by simply turning it with one hand according to the intensity of the user's choice using the rotation of the large and small teeth. This product causes the user to work with a pencil more smoothly on the desk.