... be optional LNEB-9602 ComponentsFrame:6061 Aluminium AlloyTyre:20’’x1.75Rim:Al Alloy double wall, CNC ... Al AlloySeat post:Steel, foldable for battery removal or alloy with suspension.Lighting:Super White LED front ... Controller:1:1 PAS- Pedal Assist Sysytem.with Overload protection ,Low voltage protectionBattery:24V,10Ah or 36V,10Ah Li- ... 20ft; 255pcs/40HQ 100% high configration folding Electric bicycle