[8mm]
The total height of the coupling is 18mm,
The cylinder height is 12mm,
The outer diameter of the cylindrical part is 11.5mm,
There are 2, 3.17, 3, 4, 5, 6, 7, 8, and eight kinds of inner diameters of the cylindrical part.
Suitable for connecting shafts with diameters of 2, 3.17, 3, 4, 5, 6, 7, 8, and eight diameters respectively,
The screws for side fastening are M4 screws, and the fixing screws for the center hole of the hexagonal surface are all M4 screws.