High Torque: Twotrees stepper motor Adopting high quality motor steel material, Twotrees electric motor kit is provided with high torque (42Ncm(60oz.in) ), low self-inductance reactance, responsive and can avoid system error.Low loss stators have better high speed performance. Low Resistance: Twotrees stepper motor can get a lower resistance value compared to motors of the same thickness and torque. This considerably increases the thermal conductivity of the motor. This effectively reduces the increase in temperature. Wide Application: This small stepper motors can be used in various area, such as 3D printer; stage lighting; laser engraving; textile machinery; medical equipment; placement machine; non-standard equipment; automation equipment etc. What You Get: The package includes 3* 23mm Stepper Motor/3pcs 1m 4pins cables and connector (Size: 42mm X 42mm X 23mm/1.65''x1.65''x0.90'' ,NEMA 17 bipolar 4-wire:Red: A+ ,Blue: A- ,Green: B+ ,Black: B- ) Excellent Service : CE certified?Each nema 17 stepper motor has undergone a rigorous quality control ex works, can carry out a 24-month quality assurance . If need further please fell free contact us, we very happy to assist you.