wheelbarrow wheel 1, pneumatic and solid wheel 2, plastic and steel rim 3, rubber esispastic and PU 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 and ... .50-8, 12)18inch : 18''x8.50-8, 13)20inch : 20''x2.125'', 14)26inch : 26''x1.75'', 26''x1 3 ...