... rating:2PR,4PR,6PR or 8PR 3.Ball bearing We manufacture full range of rubber wheel for wheel barrow, hand trolley, hand truck ... ” ×2”, 8”, 9”, 10”, 11”, 12”,13”, 14”, 15”, 16”,18”.PU foam wheel 3.25-81.Tyre Pattern:Lug pattern etc.2.Steel rim 3.Ball bearing4 ... .Ply rating:2PR,4PR,6PR or 8PR. 5.Rim: Zinc ...