... one 4, tube and tubeless wheelbarrow wheel 1)pneumatic and solid wheel 2)plastic and steel rim 3)rubber esispastic and PU esispastic wheel 4)tube ... .50-6 , 8)13inch : 13''x3.00-8, 13''x3.25-8, 13''x4.00-6, 13''x5.00-6, 13''x2.50-8, 13''x6.50 ... , 11)16inch : 16''x4.00-8, 16''x4.50-8, 16''x6.50-8, 16''x4.80-8, 16''x7.50-8, 12)18inch : 18''x8 ...