ANNOYTOOLS CNC Aluminum Z Axis Spindle Motor Mount,85mm Stroke,300-500W Spindle Holder,52mm Diameter for 3018 Pro/3018-PROVer/3018-MAX - Amazon.com
170mm Z AXIS SLIDE TRAVEL CNC ROUTER Linear Motion kit For Reprap 3D Printer CNC no/with motor(Second hand NEMA17stepper) - AliExpress
PRO Ballscrew Z Axis | Avid CNC
Befenybay 200mm 4080U Z-axis Screw Slide Table Linear Actuator Kit Linear Module for 3D Printer and DIY CNC Router Parts X Y Z Axis: Amazon.com: Industrial & Scientific