1 Firm Connection: The coupling can connect two shafts with different diameters or one motor shaft for firm and stable connection. 2 Efficient Works: Fix the bearing and sprocket tightly on the shaft and reduce the stress when shafts are not in good alignment. 3 Extensive Using: Allows for wide application on blowers, 3D printers, DIY robots, CNC machine tools, stepping motors and more. 4 Perfect Fitting: Suits perfectly for NEMA 17 step stepper motor, the coupler connector has 14mm diameter as well as 25mm length. 5 Including 10Pcs: Made from premium aluminium alloy material, all the 10pcs enable very convenient replacement and installation.
What's in the box
10 x Shaft Coupling
