Features: 1.Designed for Kobra Go: This dual Z axle upgrade kit is specially designed for Kobra Go, comes with 350mm screw rod, stepper motor, aluminium coupler, spring installation components and more. 2.High Stability: This dual Z axle kit reduces the layer ripple caused by Z axle impact, avoiding backlog of filament thoroughly, which improves stability of 3D printing and increases the printing performance of 3D printer. 3.Bed Leveling: These 3D printer upgrade parts upgrade single Z axle structure to a dual Z axle structure, making the printer more easy to leveling. Both ends of the X axle are raised and lowered synchronously, which reduces difficulty and frequency of bed leveling obviously. 4.Stepper Motor: This 3D printer screw rod kit adopts stepper motor, which ensures the smoothing operation of screw rod. 5.High Accuracy: This 3D printer dual Z upgrade kit is designed to make the structure more stable and the printing of higher accuracy, and it can be easily installed. specification:Item Type: Dual Z Axle Upgrade Kit Material: Metal Screw Rod Length: 350mm Applicable Model: Designed for Kobra Go 3D Printer PackageList:1 x 350mm Screw Rod 1 x Screw Rod Holder 1 x Motor 1 x Motor Shell 1 x Coupler 1 x Motor Cable 3 x Spring Installation Component 1 x Screw Kit