【Specification】 - Thread Size: M4; Length: 23mm/0.91 inch; Outer Diameter: 11mm/0.43 inch; Inner Hole Dia: 5mm x 5mm/0.20 inch x 0.20 inch
【Material】 - The universal joint coupling nuts are made of premium material, which is sturdy and durable for long lasting use.
【Feature】 - universal joint coupling adopts a special coupler, used for connecting the motor shaft and the hexagon wheel of the robot, toy cars, and other models.
【Advantage】 - The universal joint coupling provides torque transmision and alignment,cost effective coupling design,which is very flexible and easy for use.
【Application】 - The rotable coupling is perfectly applicable for RC model car and RC model boat,is perfect motor shaft fitting accessories.