General description The Dual Z Upgrade Kit is designed for 3D printers including the 3, 3 Pro, and 3 V2 models. This kit enhances the printer's performance by converting the single Z structure to a dual Z structure, allowing for smoother operation and improved leveling. Technical specifications Color: Black Material: Metal Package Contents: 1 x Z-double screw accessories set Measurement allowed error: +/- 1-3 cm Installation No modifications or welding required No need to replace the motherboard Comes with instructions for quick assembly Usage Improves bed leveling by synchronously raising and lowering both ends of the X-axis Reduces layer ripple caused by Z-vibration, enhancing stability and printing performance Retains the design of stepper motor for smooth operation