Everything bolts right in, the lead screw was surprisingly straight for the cost, nut travels smooth. Hook it up, and level it if you are splitting a driver. Good to go. Install was a snap. I accidentally purchased this thinking it was the same specs for my Ender-3 Pro. The hardware was a little loose in the package but everything needed was there.
The kit came complete with everything (brackets/screws/wiring) needed to add dual-Z motors to my Ender 3. The kit seemed nice quality and I would trust it to work fine if calibrated. The installation was a breeze. Only wish that the kit included a Y connection between the two z motors instead of off of the board. Otherwise a very good kit.
Everything was fine. all parts came and were in great shape. the only complaint I had was no instructions. It took me hours instead of minutes to install. From what I can tell, all the parts are from Creality. The parts are all very high quality. I just printed a Death Star topper and now I can visually see the movement.