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NEMA 17 Geared Stepper Motor 42x42x48mm ratio 50.9:1 Stepper Motor 2 Phase 2.77V 42x42x48mm 1.8 Degree 2 Phase Ratio 50:1 17HS19-1684S-PG51 Nema 17 Gear Reducer Stepper Motor The 42mm Hybrid Stepper ...