... , 3.50-6, 4.10-6, 3.50-7, 3.25/3.00-8, 3.50-8, 4.80/4.00 ... , 6.50-8 and so on.Main use: wheelbarrows, hand trucks, trolleys, carts, wagons, jockeys, casters, tricyles and so on.Main ... B/L.Welcome to your kind inquiry. Pneumatic Wheel 3.25-8 high quality & Reasonable price