General description These 4 Pack 2.80/2.50-4 Inch Inner Tubes are designed for use with various hand trucks, carts, lawn mowers, wheelbarrows, and scooters that utilize a 4-inch rim. Each inner tube features a TR87 bent valve stem for easy inflation and secure operation. Technical specifications Size: 2.80/2.50-4 inches Material: Rubber Color: Black Package Contents: 4 inner tubes Measurement allowed error: +/- 1-3 cm Installation It is recommended to position the bent valve outward during installation for convenient inflation. Usage These inner tubes are suitable for a variety of applications including scooters, lawn mowers, wheelbarrows, and hand trucks. Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.