Durable Good Quality Competitive Price Prompt & Detailed Reply Natural rubber & reclaimed rubber ... supply many different size of rubber wheels, like 2.80/2.50-4, 6" x 2", 3.00-4, 4.10/3.50 ... -6, 6.50-8 and so on.Main use: wheelbarrows, hand trucks, trolleys, carts, wagons, jockeys, casters, tricyles and so ... the B/L.Welcome to your kind inquiry. Pneumatic Wheel 2.50-4 High quality and Competitive price