The corn zipper is an improved type of metal zipper series double-point teeth. The difference between the two-point teeth is on a single sprocket, and the sprocket has a barb at the foot, which makes the sprocket and the belt bite more. Strong, the outer side of the corn tooth is slightly narrower than the inner side, and looks like corn, which is more beautiful than ordinary teeth and Y teeth. Corn teeth are not divided into positive and negative directions and are more convenient to use.