Adjusting two-stem tongs

Double pole clamp includes clamp body composed of jaw openings, two clamp arms and clamp shaft. Extension bars are installed on clamp arms. Characters are that screw thread nip adjustment for jaw opening is setup at a clamp arm. Twisting knob handlebar of screw thread nip adjustment pole in the adjustable double pole clamp can adjust angle of clamp arms and jaw openings so as to change initial open angle of jaw openings, after clamp arms are closed. Thus, range of opened jaw openings can be controlled freely without increasing width between two arms of operation person. The limiting value of range of opened jaw openings is increased. Features are simple structure and convenient use.