Collars
The Studica Robotics D-Shaft Collar is 6mm ID and 12mm OD. The inside diameter will fit any of the D-Shaft axles.
Specifcations:
Material: 6061-T6 Aluminum
Φ20.0mm*8.0mm thick
2*M3 thread for M3 SHCS
on the clamp side
Φ6.0mm D hole
AL6061-T6