Factor of Universal four-jaw clamp with variable top cable in China, chrome-plated. The total length of this clamp is 190mm and the width of the clamp is 70mm. Use the flat knob on the side to adjust the clamping range. The alternating direction is due to the design of the clamp with a rotating screw in the middle, which makes the clamp more flexible to use. By adjusting the direction of the double top wire on the iron frame, not only the direction but also the belt can be adjusted. The screw is adjustable, you can adjust the tilt direction, which is safer ad more stable.