●Official Guarantee: 100% Creality official stepper motor, our 42-40 stepper motor compatibility with Ender 3/Ender 3 V2/Ender 3 pro/Ender 5/5 pro/5 plus/Ender 3 max/CR-10/CR-10s/CR-10 V2/CR-10V3 3D Printer. ●Parameter: 1.8-degree step angle, 0.4 N.M holding torque, with 1A rated current per phase. (The connecting cable is not included.) ●High-Quality Stepping Motor: With low power, stable speed and performance, low noise, and no step loss during operation, which ensures the stable operation of the extrusion mechanism. ●Low Noise & High Precision: It fits perfectly with the high-strength synchronous wheel and synchronous gear, which ensures its high precision, reduces vibration and noise during work, and provides you with a relatively quiet printing environment. ●After-sales Service: If you have any unsolvable problems during installation and use, please feel free to contact us, our after-sales technical team will provide you with detailed solutions within 24 hours.