5pcs Brass Rigid Motor Shaft Coupling 2mm 2.3mm 3mm 3.17mm 4mm 5mm 6mm Coupler Motor Transmission Connector with Screws

High-concerned chemical：None Flexible or Rigid：Rigid Model Number：2mm 2.3mm 3mm 3.17mm 4mm 5mm 6mm Material：STEEL Structure：disc Origin：Mainland China Certification：NONE

High-concerned chemical: None Flexible or Rigid: Rigid Model Number: 2mm 2.3mm 3mm 3.17mm 4mm 5mm 6mm Material: STEEL Structure: disc Origin: Mainland China Certification: NONE