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Feature:
1. This dual Z axis kit is a good choice for Ender 3 Pro 3D printer
upgrading.
2. The product can be used to modify your for Ender 3 Pro for BLV/Ender 3 Pro
3. The screw is made of high-quality metal, which is durable and strong.
4. The double Z-axis screw is featured with nice workmanship, excellent quality and durable performance.
5. The product is practical, useful and helpful for your 3D printer.
Specification:
Item Type: Double Z-axis screwModel: Double Z-axis screw upgrade kit for BLV/Ender 3 ProMain Material: Metal
Suitable for Creality Ender 3 Pro 3D printer
Package List:
2 x Double Z-Axis Screw
2 x Aluminum Block
1 x Belt 
1 x T8 Nut
2 x Synchronous Wheel
2 x Bearing 
14 x Screw
2 x Isolation Column
8 x Gasket 
2 x Nut