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ULN2003 Driver Board stepper motor Brand new with high quality Rated Voltage: DC5V-12V 4-phase Reduction Ratio: 1/64 Step Torque Angle: 5.625°/64 DC Resistance: 200?±7% (25°) Insulation Resistance: >10M? (500V) Insulation Grade: A No-load Pull in Frequency: >600Hz No-load Pull out Frequency: >10..