wheelbarrow tire 1, natural rubber 2, thicken tire and tube 3, all kinds for choose, from 6" to 18" 4, fast delivery About the product size 16"x 4.00-8 ply rating 2PR or 4PR packing 20pcs/bundle pattern diamond, comb, rib, line and so on rubber and strong wheelbarrow tyre 4.00-8