... .Product Details: NumberPartsSpecification1Model No.FOLDING-XKL0232 Size20"3FrameHi-ten steel ,Suspension spring4ForkHi-ten steel 5Rim20 Aluminum rim 20X14*36H6Handlebar and stemalloy, argon ... any questions,please contact us. Portable 20''Folding Bike,Hi-ten steel frame and fork