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Mini Stepper Motor - 200 Steps - 20x30mm NEMA-8 Size : ID 4411 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Stepper Motor Specifications, NEMA 17 1.8 Degree 200 Steps-per-revolution Four-phase Unipolar Permanent-magnet Stepper-motor
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