2-5mm Motor Copper Shaft Coupling Coupler Connector Sleeve Adapter US Drop Ship

High-concerned chemical : None Standard or Nonstandard : Standard Flexible or Rigid : Rigid Model Number : 20202020 Material : Other Structure : Other Origin : Mainland China Certification : None Cross-section at both ends of the diameter : 9mm,9mm Cross-section of the middle diameter : 7.3mm,7.3mm Total Length : 20mm,20mm Screw Hole : M3,M3