We strive to put our hundred percent to resolve your issues and try our best to achieve your satisfaction!About Feedback:Our company pays great attentions to the shopping experiences and feedback from the customers.Your satisfaction and positive feedback with 5 stars is the motivation for us to move forward.It would be highly appreciated if you could leave a good review or a positive feedback to our product and our store. If you have any problems with our items or services, please feel free to contact us first before you leave negative feedback. We will do our best to solve any problems and provide you with the best customer services.Features: A, B, C, D four-phase LED indicates the status of the stepper motor work. Stepper motor with a standard interface, when used directly pluggable. 5 line 4 phase can be used for ordinary ULN2003 chip driver, connect to the 2 phase , support the development board?With convenient use, direct docking Rated Voltage: DC5V 4-phase Insulation Resistance: >10M? (500V) Dielectric Strength: 600V AC / 1mA / 1s Step angle: 5.625 x 1/64 DC Resistance: 200?±7% (25C) Reduction ratio: 1/64 Insulation Grade: A No-load Pull in Frequency: >600Hz No-load Pull out Frequency: >1000Hz Pull in Torque: >34.3mN.m(120Hz) Detent Torque: >34.3mN.m Temperature Rise: ?40K(120Hz) Package including: 5 set Uln2003 Stepper Motor + Driver Board10pcs female to male cable(as a gift)