1 Ender 3 Dual Z-axis Upgrade Kit, to make the structure more stable and the printing of higher accuracy 2 Length of the Rod Lead Screw for the ender 3 V2 dual z upgrade kit: 365mm/ 14.4inch. 3 All the parts you need to upgrade ender 3, ender 3 pro, ender 3 V2 to dual Z rods are included in the box. 4 The ender 3 dual z-axis upgrade kit is compatible with Creality ender 3, ender 3 Neo, ender 3 pro, ender 3 V2, ender 3 V2 Neo 3D printers 5 There is a full metal plate to lock the power supply, we are sure that you will like this design.