Aopin 4mm to 4mm Rotatable Universal Joint Coupling Shaft Stepper Motor, Length 52mm / 2.05", Coupler Connector with Screw for 3D Printer, RC Robot, Car Boat Shaft, DIY Encoder, CNC Machine 2 Pcs

The Flange Coupler is a high-quality, durable coupling that is perfect for RC model motors.

It has anodized aluminum alloy surface with excellent corrosion resistance, providing stable shaft transmission and convenient installation/replacement.

The product name is "Flanged Coupler" and it is often used in high torque transmission occasions.

When the rated torque is exceeded, the coupling can protect the safety of the linkage.

It is suitable for 3D printers of various models/brands and rigid flange coupling.