Befenybay 2PCS 5mm to 8mm Aluminium Plum Flexible Shaft Coupling D20 L25 Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor（5x8mm）

Definitely not a precision product, but the work for hobby applications.

Good idea, I hope it works

Just what I was wanting

Il prodotto è arrivato da UK, un pò caro e spedizione lenta, ma il prodotto fa molto bene il suo lavoro, acquisti per stampante 3d. Consigliato come upgrade.

Needes for 10mm stepper shafts amd 1605 ball screws.

After 3 months of lite use, they completely separated. The rubber-type press fit seems to be dried out and has lost its flexibility.

Works great used it to replace a damaged coupling on my ender 3v2, only issue I encountered was the screws not quite fastening the coupling to the Z motor properly, which was fixed by using the screws for the original coupling.

Will separate when pulled. Doesnt help screw wobble, to stiff of nylon insert. Screws strip easily, wont grip shafts without a lot of torque.

Both of the ones I received were so tight, I doubt they would separate in the event of a nozzle crash. Ironically, the one I did use slipped on the motor side, causing a nozzle crash, despite being tightened to the point I was worried about stripping threads.

Took me some time to figure out what was causing the banding on my print. When I took the lead screw out and looked at the shaft coupler while it spun, you can easily see the top piece wobble, thought it was just a bad z-screw initially, but after replacing that first, it had to be the coupler.