Stepper motor specifications: 42 MMOptical height: 47.3 MMOutput shaft: 5 MMOutput shaft length: 17.5 MMStep angle: 1.8Resistance: 1.2 euro or soLead: two-phase four-wireLine length: 180 MM (line is sent)(Where the white and green lines are A phase, the yellow line and the red line are B phase)(Another second and fifth feet are vacant)White line: A +. Green line: A -. Yellow line: B +. Red Line: B