Check the listing for details. Clamp Tight Motor Shaft 2 Diaphragm Coupling Joint CNC Stepper Connector Coupler. Condition: New, Made in China. Listed at 24.40 USD. Features:Flexible couplings are used to link 2 rotating shafts that are not aligned in order to transmit the rotational power,known as torque, from 1 shaft to the other.Most flexible couplings consist of 2 hubs and 1 middle assembly; each hub attaches to a shaft while the middle assemblyflexes between the hubs to accommodate the misalignment of the 2 shafts.Shaft misalignments are generally either parallel or angular and cause complications to transmitting rotationalpower from 1 shaft to another in the form of stresses, loads, vibrations, and other forces,which vary from 1 type of misalignment to another.Flexible couplings are used in a broad range of applications, such as in motor, conveyors, escalators,agricultural, forestry and mining equipment, aeronautics, robotics and space exploration, among others.