2Set Rigid Shaft Coupling Coupler Stepper Motor CNC 3D Printer 4 5 6 7 8 10 12mm
2pcs Rigid Motor Coupling. Cushioning, vibration, improve the dynamic performance of shaft. 01 4mm-4 mm(M4 machine screws are used for the side holes). 02 4mm-5 mm(M4 machine screws are used for the side holes).