4 Pack Ridenow TPU Inner Tubes Ultra-Light 700 x 18-32c/32-47c with 45mm/65mm/85mm Presta Valves for Road Bike or Gravel Bike (Include Bike Tube Patch Repair Kit)

• Two Sizes Available: 700x18-32C and 700x32-47C. If your road bike tire size is 700x18C, 700x23C, 700x25C, 700x28C, or 700x32C, choose 700x18-32C. If your gravel bike tire size is 700x32C, 700x35C, 700x37C, 700x40C, or 700x47C, choose 700x32-47C.
• Multiple Valve Length Options: Available in 45mm, 65mm, and 85mm Presta valves, you can choose the perfect valve length to match your bike's rims.
• Featherweight and Durable: Made with advanced Thermoplastic Polyurethane (TPU) technology, these tubes weigh just 36g (700x18-32C) and 45g (700x32-47C). They offer the perfect balance of durability and lightweight design, ideal for competitive racing and everyday riding.
• Versatile and Cost-Effective Compatibility: Designed for both disc and rim brake systems, these innovative inner tubes suit a wide range of road bikes. They provide exceptional puncture resistance and maintain stable performance even at lower tire pressures, making them ideal for challenging racing and riding conditions.
• Proper Inflation Guidelines: To avoid damage, do not overinflate the inner tube when it’s not installed in the tire. During installation, start with an initial inflation under 0.5 Bar/8 Psi. Ensure the inner wall of the wheel and tire is clean before installation to prevent foreign objects from puncturing the TPU inner tube.

It is important to choose the right model! Otherwise it will be incompatible and cannot be used.