Model: Rigid Coupling
Material: Brass
Length: 20 mm
Out Diameter: 9 mm
Screw Hole diameter: 3mm
Transfer Pore Diameter: multiple Specification
Bore Tolerance: +0.02
For example: the Specification "2-5 mm" means one end is 2mm pore diameter,the other is 6mm.
The size:Please check the size picture !