... ,18,20,22,24,26,28 inch electric bike BLDC front wheel motor QMWB 16,18,20,22,24,26,28 ... inch electric bike BLDC front wheel motor QMWBNOTICE: Model:QMWBvoltage:36Vpower:180-250Wspoke hole diameter ... ,18,20,22,24,26,28 inch electric bike BLDC front wheel hub motor