Features: This product can help ENDER3 series models from a single Z-axis screw support to a double screw, which can balance both sides, raise or lower synchronously during printing Upgrade of dual Z axis, the x-axis rises steadily and runs smoothly, reduces the lamination caused by z-axis vibration, and greatly reduces the leveling difficulty and leveling times. Compared with the upgraded double Z kit sold on the market, this kit contains a power fixed module, which no longer allows the power supply to be scattered freely to avoid electric shock and short circuit. No need to weld or replace the motherboard, directly insert the one to two motor wire into the motherboard. Specifications: Item: 3D Printer Dual Z Axis Upgrade Kit Color: Black Material: Sheet Metal + Stainless Steel Material: sheet metal + stainless steel + stepping motor Suitable for: for Ender 3 /3X , V2 ,CR10 CR10S 3D printers Note: Please allow 0-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please select the 3d printer you need to upgrade, the Lead screw length and accessories of the two are not exactly the same Package includes: 1 x Dual Z Axis Upgrade Kit