General description Inner tube made of isoprene isobutylene rubber, offering superior airtightness, elastic cushioning, and aging resistance compared to natural rubber. This heavy-duty inner tube features a TR87 bent valve stem and has a maximum inflation pressure of 30 PSI. It is designed for various applications including hand trucks, dollies, garden carts, lawn mowers, small tractors, wheelbarrows, and more, fitting 4.10/3.50-4 inch tires/wheels with a 10-inch outside diameter. Technical specifications Material: Isoprene isobutylene rubber Valve type: TR87 bent valve stem Maximum inflation: 30 PSI Size: 4.10/3.50-4 inches Package contents: 2 tire tubes Measurement tolerance: +/- 1-3 cm Compatibility and accessories Compatible with Baja Motorsports Dune (DN65) Go-Kart Compatible with Bladez models (Comp, Cruz'r, S, XTR-HD 550, XTR-S 450, XTR-450, XTR-S Transport 450, Comp 2, Comp 450, Street 2, Street 450) Compatible with Turbo Housing Tiger 2403 EVO models (Evo2, Evo2X, EvoL2X,