jacket overcomes the shortcomings of traditional thread jacket mounting handle and low installation efficiency, the slotted part
of the mounting handle of the traditional thread sheath can not be controlled accurately, resulting in the phenomenon that the
tail part is not easy to break or is too easy to break. When the handle is removed, the tail end is easy to protrude, which
affects the spiral thread, and seriously affects the product quality, easy to cause detention, serious will affect the quality of
the whole product.
