Some more details about this machine: 1) In this machine it can assemble 8 screws or more at one time; 2) The machine compatible for different production lines by adjusting the width of the automation working line and can be directly connected to production lines. 3) The screws to be assembled can be any size between M3 to M10. 4) The twisting circles can be specifically set 5) The twisting force can also be tested. If the force is too much, it will automatically retreat circles to reach the set force; and if it is not enough, it will automatically increasing twisting circle to increase the twisting force. Please contact us for more information about screw-assembly automation machines. We will give you the best solution at the most reasonable cost!