Features: 1.[Scope of Application] Double Z Axis Upgrade Kit is suitable for Ender 3, for Ender 3 Pro, for Ender 3 V2 3D printers, etc. 2.[Stability] Double Z structure with lead screw stepper motor kit provides higher stability and accuracy for your 3D printer. 3.[Original Accessories] Equipped with original T8 lead 2MM screws, all aluminum coupling and original 42 stepper motor. 4.[Stable Running] The direct drive system runs smoothly. The two lead screws are electronically connected via a splitter cable, eliminating the need for belts. 5.[Easy to Use] Easy to set up, no need for welding or other modifications on the 3D printer, convenient and fast, stable performance specification:Item Type: Double Z Axis Upgrade Kit Material: Metal Function: 3D Printer Accessories Scope of Application: Applicable for ENDER3/3S/3X/PRO/V2, etc. PackageList: 1 x Stepper Motor 1 x Coupler 1 x Right Support Back Plate 3 x Power Supply Mount 1 x Screw 2 x Screw Fixing Module 1 x Engine Cable 3 x Matching Screw Pack 1 x Supporting Kit