General description These heavy-duty inner tubes are made of high-quality rubber, providing excellent airtightness and resistance to aging. They are designed for durability, making them suitable for home, professional, commercial, or industrial use. Technical specifications Size: 4.10/3.50-4 Maximum inflation pressure: 30 psi Includes: Two inner tubes and one standard bent TR87 valve stem Dimensions of inner tubes: 10.1/8.9-10.2 cm Compatibility and accessories Compatible with 4 inch tires Suitable for various equipment including wheelbarrows, lawnmowers, tractors, and garden carts Installation Use a hand pump for inflation Inflate to avoid overinflation Usage Not for road use Other information