... 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:130mmSpeed:175-330rpmefficiency:80%wheel size ... geared permanent magnet motor 16,18,20,22,24,26,28 inch electric bike BLDC front wheel hub motor