General description This 4 PCS 4.10/3.50-4 inch inner tube is designed for various applications including hand trucks, dollies, garden carts, lawn mowers, small tractors, wheelbarrows, and more. It serves as a perfect replacement for 4.10/3.50-4 tires/wheels, featuring a 10-inch outer diameter. Made from isobutylene isoprene rubber, this inner tube offers superior air tightness, elastic damping, and aging resistance compared to natural rubber. Technical specifications Size: 4.10/3.50-4 inch Outer diameter: 10 inches Material: Isobutylene isoprene rubber Max inflation: 30 PSI Ply rating: 4 Valve type: TR87 bent stem Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with Baja Motorsports Go Kart (DN65) Compatible with various Bladez models Compatible with Hoveround Teknique FWD Compatible with PaceSaver models Compatible with Super Turbo models Includes: 4 inner tubes and 2 crowbars Installation Inflate using a hand pump only. Check for complete sealing by