This upgrade kit is designed by Mr Ben Levi, for Ender 3 pro 3d printer also compatible with ender-3 Pro V2 3D Printer.
The upgrade kit offer 4sets MGN12H rail with blocks , you can directly use it together.
About the installation instruments, please refer to Youtube by searching keywords BLV ender 3 Pro Upgrade.
By using only aluminum parts, mgn12 linear rails, BMG dual drive extruder and more - you will gain maximum accuracy, efficiency, and high print quality.
Package: 1set aluminum plates +1set screws kit+ 1piece Y axis Belt+1piece X axis Belt +4pcs rails.