... Place of origin(Mainland) 2.Power:350W 3.electric bicycle motor 4.electric front wheel motor 5.high efficiency 1.brushless, ... creeping slop capacity4.no spark,no electric interference,explosion prevention5.high efficiency,less electric power consumption6.large starting power,strong ... wheel size: 20', 22', 24',26',28'10. Certification: CE-approved Electric Bicycle Brushless Hub Motor 16inch suppliers