Zeberoxyz 200mm 4080U Z-axis Screw Slide Table Linear Actuator Kit Linear Module for 3D Printer and DIY CNC Router Parts X Y Z Axis

Not much to say except that it's just as advertised, built well, and looks to be reliable.

I was using this on a laser. The up/down movement was smooth and nice, but the front part that moves would shake forward and back. There is a mechanism to tighten it and reduce that play, but with force and shaking on the head it quickly becomes loose again.

de muy buena calidad, creo que pueden mejorar la calidad de la tuerca para el tornillo de bola

As advertised, smooth operation