[5pcs 5mm]
Couplings5/10Pcs 3/4/5/6/7/8mm Brass Rigid Motor Shaft Coupling Hexagonal Motor Shaft Coupler Transmission Connector Sleeve AdapterPlease noted:Package: 5 or 10 pcs Coupler+ 2 pcs screws+ 1 pc wrench(each order only have one wrench)