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42MM planetary gearbox can be matched with 775 795 895 geared motor forward and reverse high torque and low speed

ZGY370 DC 12V Gear Reduction Motor Worm Reversible Turbo Geared Gearbox Reducer 2RPM - 100RPM 200RPM 46/32

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DC 3V 6V 12V Slow Speed Mini 050 N20 N30 Metal Gearbox Worm Gear Motor High Torque Reduction Engine DIY Robot Car Eleltric Lock

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