The flange coupling has two kinds of diameter and length:
The inner diameters are 3mm, 4mm, 5mm, and 6mm four kinds of dimensions are:
cylindrical outer diameter of 10mm,
cylinder height of 10mm, a total height of 12mm,
The fixed set screw is M3.
The inner diameters 7mm, 8mm, 10mm, 11mm, and 12mm kinds of dimensions are:
cylindrical outer diameter of 16mm,
cylinder height of 10mm, a total height of 13mm,
The fixed set screw hole is M4.
Material: Iron Plating