... price 5.CE,EN15194,RoHS, MSDS, UN38.3 21 speed 36v 250w foldable 26" e-bke kit Hot Sale500pcs ... or pedal assist modes of electric powerDerailleur: SHIMANO 3*7 speed freewheel derailleur, SHIMANO shifterBrakes: alloy levers, disk brake, baking ... Features:Fashionable Design Alloy frame: derailleur and shifter Shimano, 3*7 SpeedSuspension fixtureAbsorber fixture with LockerDisk brakeFoldable ...