High wrench torque load, high wrench torque rigidity capacity and excellent sensibility.
Dual stainless steel rings to correct radial, angular and axial deviation.
Clockwise character is exactly the same as anti-clockwise one.
Free maintenance, oil-resist and anti-corrosiveness.
Offset of angular, parallel, or axial deviation are individual allowed value, so couple reasons of axial offset appearing at same time would reduce the unit allowable value.