... steel/aluminum 2. Strong frame and fork 3. Size range: 12"-20" 4. Factory OEM/ODM 5. ISO9001:2008 Certificate ... is ready to rideSpecification: FrameHi-ten steel 12”, TIG welding, as per photo shapeForkSteel 12”Handle barSteel, MTB typeTire12x2.125, rubber, ... , 3PCS, CPDerailleursingle speedOther accessoriesReflectors,PVC mudguard, carrier, quick release GT-F12001 12" Cute Kids Folding Bicycle