Rigid coupling is a coupling of torsional rigidity, its characteristic. To introduce below small make up with all of you. 1. Light weight, low inertia and high sensitivity. 2. Free maintenance, strong oil resistance, corrosion resistance. 3. Selection of aluminum alloy and stainless steel materials. 4. Clamping and separation. 5. Both ends of the aperture size can be different. These are the characteristics of the rigid coupling, whether we understand.