When people use pencils, they will encounter some problems, such as no pencil sharpener, easily damaged tip, and the last 5 cm can not be used. On the basis of the traditional pencil sharpener, a concave design is added at the other end, which can protect the tip of the pencil and extend the length of the pencil. Its overall length is 52mm, weight is 3G, light and compact, when it is fixed on the pencil, there is no weight pressure, it can also be easily stored into the pencil bag with the pencil, and it is inseparable from the pencil!