3V/6V/12V Low Speed 4rpm 8rpm 16rpm Dual /Single Output Shaft N20 Gear Moror Reducer Engine DC Metal Mini Electric Micro Motors
https://www.vogueparade.com/shopping/EN/5/1/1005003430714473/3v6v12v-low-speed-4rpm-8rpm-16rpm-dual-single-output-shaft-n20-gear-moror-reducer-engine-dc-metal-mini-electric-micro-motors//