2 Pack Ridenow TPU Inner Tube 700C x 18-32C/32-47C with 45mm/65mm/85mm Black Metal Presta Valve with Detachable Brass Core Lightweight Tubes for Road Bike Gravel (Include Repair Patch Kit)

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• Lightweight and Durable: Utilizing Thermoplastic polyurethane elastomer (TPU) technology and weighing only 45g, it perfectly balances durability and lightness, making it an ideal choice for competitive racing and daily riding.
• Metal Valve: Made of high-strength aluminum alloy, it ensures lightweight while maintaining the durability of a metal valve. Compared to ordinary valves, it offers better air-tightness, corrosion resistance, and greater stability during rides.
• Replaceable Valve Core: Easy to replace and maintain, compatible with threaded extension nozzles, making it suitable for a wider range of wheels.
• Multiple valve lengths available:available in 45mm, 65mm valve lengths to match your rim.
• Versatile and Cost-Effective Compatibility:Our product is designed for universal adaptability, ensuring seamless compatibility with various bicycle wheels. Anti puncture, resistant to high and low temperatures, and able to maintain strong stability even in harsh environments, ensuring long-lasting riding.
• Inflation & Usage Instructions: To prevent irreversible stretching and bulging, avoid overinflating the tube outside the tire. Fill to 0.5 PSI initially to shape the tube and align it with the inner tire wall. Do not exceed 5 PSI (0.35 bar) during bare-test inflation. Finally, ensure the rim is clean and the tube is not pinched by the tire bead before pumping to high riding pressure.