... .0~4 V 3.Speed:10000~30000 4.Weight:1g Mini motor MRF-0408BYThis motor is very small and often used ... -0412, MRF-0610, MRF-0724, MFF-0810, MFF-0815, MFF-1012, MFF-1015 , MFF-1213, MFF-1215, MFF-1220, MFF-1418 ... -2430, MFC-2430, MFF-12, MFF-1527, MRF-2430 ect Mini motor MRF-0408BY