Suitable for: the use of the straight shaft of the motor, and the transfer of metals such as model cars, model ships, robots, etc. Features: iron plated universal joint can be bent at any angle (rotation angle 45 degrees), The universal joint can change the transmission direction at any angle. Originally, a motor shaft is oriented to the south. Through universal joint connection, the direction of the rotating shaft can be changed to face the ground. It can isolate or axial vibration and impact, with and small transmission inertia, It has the advantages of adjustment angle, convenient installation, wide application range and long service life. Name: steel universal joint and coupling Colour:gold Material:Stainless steel Size:3MM x 3.17MM Package Contents: 30 x universal joint coupling 60 x machine screw Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.