Type: Flexible shaft couplingMaterial: AluminumSize: 10 x 14 mmouter diameter: 30 mmlength: 42 mmthe structure is simple, easy to install, buffer, damping, suitable for disconnecting.It includes the size and the surface is smooth.the elastic connection, can absorb vibration, compensate for axial, angular and radial misalignment.shaft coupling is often used to connect the motor stepper motor, encoder, screwed, platform etc. of the machine.Note: Size refers to the hole, for example, is known as a 10x14mm head bore diameter is 10mm, the other is 14mm.Package Contents: 1 x Spider Flexible couplingOnly the above package contents are included, no other products are included.Note: Light and different displays may cause the item color in the picture to be slightly different from the real color. Measurement tolerance is +/- 1-3cm.