
This new 2.50-4 (8" x 2-1/2") inner tube fits many hand trucks, carts, lawn mowers, wheelbarrows, and scooters that use a 4" rim with an 8" tire and have a curved (TR87) valve stem with cap. This tube is made of isobutylene-isoprene rubber, which is better in terms of airtightness, elastic damping, and aging resistance than natural rubber. Please check the sidewall of your tire - if it says "2.50-4", "2.80/2.50-4", or "2.80-4", then this tube will probably work.