Most two-color lighter handles are made from plastic injection molds with rotating shafts. The rotating shaft process or the rotating core process means that the two-color plastic injection mold is not rotated by the injection molding machine, but the core is rotated by the injection molding machine or the injection mold cylinder. When the injection molded part is made into the second color, the controller of the injection molding machine will send a signal of the core pulling system, rotate the first core of the mold to the second position of the core, and then perform the injection of the second color.