JSumo Set Screw Shaft Coupler 4mm to 4mm (Pair)

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Pair of JSumo Set Screw Shaft Couplers (4mm to 4mm) Hole Size:4mm Outer Diameter: 7.8mm Length: 12.3mm Can be used to extend motor shafts or to connect two shafts together The JSum o Set Screw Shaft Coupler 4mm to 4mm (Pair) can be used to extend motor shafts or to connect two shafts together. It keeps the mill tightly with vertical screws and provides strong mechanical connection between transmission axes. Show more