New propelling pencil

The utility model discloses a novel propelling pencil which is composed of a pencil holder, a tail seat, a pencil sheath, a core storage pipe, a spring, a collet, a collet sheath, etc. The utility model is characterized in that a pencil core is a thick long strip shape of a positive hexagon, the front end of the collet is composed of two open hemispheroids which are arranged on the front end of a tapered collet, a hole of a pencil head is a positive hexagonal column shape, and the pencil head and the collet are used for positioning the pencil core. The tail seat is pressed down and two hemispheroids of the front end of the collet are open. The pencil lead can be freely telescopic to a required length. The upper end of the pencil sheath is provided with a pencil sharpening sharpener appliance. The tail seat is provided with an eraser. The utility model has the advantages of convenient operation and raw material saving and can satisfy various writing requirements.