... ,EN15194,RoHS, MSDS, UN38.3 21 speed 36v 250w foldable 26" e-bke kit Hot Sale500pcs in StockModel: Z3SpecificationsFoldable designOverall dimension ... , disk brake, baking power off functionWheels: alloy 26” double wall aluminum rims, spoke Tires: 26” x 1.95", slime self-sealing flat ... service life CETIFICATIONSCE,EN15194 EN14764 21 speed 36v 250w foldable 26" e-bke kit