2X Double Z- Upgrade Kit with Lead Screw Stepper Motor, Suitable for -3 / -3 V2 / -3 Pro 3D Printer

Stable Performance - Compared with Closed Timing Belt, this 3D printer parts set still retains the design of stepper motor to screw rod smooth operation. Easy Assemble - No need to modify or weld the machine, no need to replace motherboard, this 3D printer accessories kit comes with instructions, could be assemble quickly. Increased Accuracy - Compared with original structure, dual Z- kit reduces the layer ripple caused by Z- vibration, increasing the printing performance of 3D printer. Smooth Running - Upgrade Single Z- structure to a dual Z- structure, avoiding backlog of filament thoroughly, which improves stability of 3D printing. Easy Leveling - Both ends of the X are raised and lowered synchronously, which reduces difficulty and frequency of bed leveling obviously.