This kit includes all the frame parts, wiring (extruder/x axis motor/endstop), and lead screw to extend the height and build platform the Ender 3 to 500mm.
Picture indicates finished product; printer not included.
Kit contents:
2 - aluminum extrusion (Z axis)
1 - lead screw (For Ender 3)
1 - 1 wiring harness for extruder/X axis motors+X axis end stop
NOTE: You are changing the build size of your printer. You will most likely need to update your firmware. If you do not know how to do that, then please learn that process before building this kit. Ender Extender is not responsible for your ability or inability to update your machine's firmware. There are a ton of resources online to guide you through that process.
Note **: Actual print height may be less than 500 depending upon the arrangement of the X/Extruder motor wiring harness and other options installed on your printer. We do not guarantee final 500mm build height.
No BLTouch/Hot End/Fan/etc extension wires are included.
Installation Guides
https://enderextender.com/pages/installation-guides
CR6SE Owners: This kit should fit your CR6-SE, however, you must choose the correct model to include the additional lead screw. The Ender 3 kit only includes one lead screw.