Material: Aluminum(T-bar)+PP+Nylon+PURear Wheel: 9.0*4.6cm PU with ligthFront wheel: 11.6*3.8cm PU with ligthMax load: 50KGWeight: 2.5KGSSize: 66*22*(56-73) cmLoading QTY:20GP/40HQ: 1619/3633pcs