... ,special for 3 and 4wheel vheicle 2.3wheel and 4wheel electric vehicle signle fixed axle motor3.specification: 16inch .10inch and ... any size of wheel 4.hub motor5.high efficiency,less electric power consumption6.large starting power,strong output fuction, stepless ... used for long time(bearing),no need to maintain10.less space and weight,great power,simple construction11.excellent starting performance, ...