Photo 1 of QWORK AC 110V 400W Knob Motor Speed Controller, 2 Pack DC 0-90V Variable Adjustable Speed Regulator for 90V DC Motors

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Photo 1 of QWORK AC 110V 400W Knob Motor Speed Controller, 2 Pack DC 0-90V Variable Adjustable Speed Regulator for 90V DC MotorsPhoto 2 of QWORK AC 110V 400W Knob Motor Speed Controller, 2 Pack DC 0-90V Variable Adjustable Speed Regulator for 90V DC Motors