1. The whole process is made compact
2. Can absorb vibration, compensate for the radial elasticity, angular and axial deviation, zero-turn gap
3. Clockwise and anticlockwise rotational are the same characteristics identical
4. Maintenance-free, anti - oil, corrosion-resistant
5. made of rigid aluminum alloy, stainless steel and engineering plastics
6. clamping-type or stopped connecting screws can be processed according to customer demand keyway