4 Pcs Universal Joint Shaft Coupling Metal Motor Connector for Connecting Model Cars Robots(5x5mm)

Nickle Plated Iron Material: The structure is compact, has the characteristics of strong hardness, durability, and it is not easy to break Lightweight and Portable: Small size and easy to carry, you can simply keep it in your bag. Take it with you, easy to use Features and Use: This joint or coupling connects rigid rods whose axes are inclined to each other. Commonly used for shafts that transmit rotatory motion Exquisite Appearance: The metal universal joint is suitable for straight shaft motors,use for model car, model ships, robots and other types of metal transfer Size: Inner Diameter: 4x6mm, 5x6mm, 6x6mm, 3x5mm, 4x5mm, 5x5mm (Optional)