1、[Applicable Models] Enhanced 3D printer upgrade parts for Ender3, for Ender3 Pro, for Ender3 for V2. Longer lifespan and high printing speed, resulting in improved print accuracy. 2、[Easy Modular Design] No firmware or wiring modifications required. This dual lead screw kit is designed for easy upgrades, allowing you to start printing immediately without hassle. 3、[Long Lifespan] Made of high carbon chrome steel, this kit offers exceptional wear resistance, smoothly motion, low noise, even force distribution, ensuring durability. 4、[High Speed Printing] With this dual Z axes kit, you can achieve faster print speeds without sacrificing print accuracy, allowing you to complete projects in less time. 5、[Enhanced Print Quality] The upgraded dual lead screw motor kit ensures smoother and more stable printing, improving overall print quality.