Material: Aluminium 6061 Brake: Wearproof and environmental protection Plastics bind piece: Fiberglass Aluminium hardness: 15 Tire: Fill air Steel circle: Aluminium cast Chain: 25H, 410b Tyre size: 16CM Output: 400every day Unfolding size: 100, 70, 43 Folding size: 67, 30, 16 Max carrying capacity: 95kg Netweight: 5. 5kg Qty/20: 700pcs Qty/40: 1500pcs