5mm to 8mm rigid shaft coupler (1 pair)
These aluminum shaft couplers are great for connecting a 5mm motor shaft to an 8mm rod. They are not "springy" like some couplers which makes them better for connecting 8mm threaded rods or lead screws to 5mm stepper motors on most 3D printer designs. Uses a 2.5mm hex wrench to tighten (included).
Includes: 2x shaft couplers, 1x 2.5mm hex wrench