pneumatic tire R4 pattern industrial tire strong quality tire strong quality tire using in the tractor, heavy equipment machinerythe pattern is R4The size range :16.9-24, 16.9-28, 19.5L-24, 17.5L-24, 21L-24ARMOUR, SOLITEK brand Industrial R4 tire 16.9-24 16.9-28 19.5L-24 17.5L-24 21L-24