TA-VIGOR Rotatable Universal Joint Shaft Coupling 6mm to 6mm Inner Dia, L23XD11mm Connectors Steering U Joint Couplers with Screws for RC Model 2Pcs

SIZE: Thread Size: M4; Inner Diameter: 6mm to 6mm; Length: 23mm/0.91 inch; Outer Diameter: 11mm/0.43 inch; Color: Silver Tone. DURABLE: The universal joint coupling nuts are sturdy and durable for long-lasting use. The universal joint coupling provides torque transmission and alignment, a cost-effective coupling design, which is very flexible and easy to use. FEATURE: The universal joint is made of 45# steel and with electroplated finish, sturdy and durable. Features with large transmission torque, high efficiency, stable transmission, small gap impact. HOW to USE: Install the two halves of the coupling on the two connected shafts respectively, then align, move and adjust the shaft to the correct place. APPLICATION: Universal joint coupling adopts a special coupler Shaft fitting accessories to connect two different shafts and make them rotate together to transmit torque for RC model car, RC model boat, 3D printers, snow blowers, grinders and other DIY projects.