To easily perform an initial operation for guiding a plurality of wires w1 and to easily change a twisting pitch.

At least two metal pipes 46 formed with openings 46a in the middle of the length include sliding bodies 51 for sliding the metal pipes 46. Drawing rods 49 are formed from rods 50 pivotally connected to the sliding bodies 51 and positioned so as to cover the openings 46a and supports 2 pivotally connected to the metal pipes 46, and the rods 50 and the supports 2 are mutually pivotally connected. The insides of the rods 50 have annular parts 53 positioned along the internal peripheral surfaces of the metal pipes 46 when in a closed state in which the rods 50 cover the openings 46a.