... 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 ... :130mmSpeed:175-330rpmefficiency:80%wheel size:16-28”speed ratio:1:4. ... 2net weight:≤3.3kgopen size:100mmfree wheel:/spoke hole:36H*12G/13Gnoise:<60dBwaterproof grade:IP54color: ...