About This [Difference: Metal vs. Plastic Valve] TPU inner tubes commonly use lightweight plastic valve, but they often lack airtightness, causing occasional leaks. We tackles this with metal (Aluminum Alloy) valve, maintaining the total weight under 36 grams for a reliable ultra-light experience. Metal valves are also more corrosion-resistant, ensuring added stability during rides. [Remoable Valve Cores] The removable valve cores in bicycle inner tubes make it easier for riders to inspect and prevent air leaks, enhancing the convenience of inner tube maintenance. Variety of Sizes: These TPU inner tubes are available in almost all common sizes on the market. We offer a more professional and comprehensive experience than other TPU inner tubes that only offer a limited range of sizes. For example, 520 size is compatible with 24 inch wheel road bike. High-Strength: It offers durability and wear resistance, extending its lifespan for different road conditions. Fastest Speed: With superior rolling resistance compared to butyl and latex inner tubes, it entices a faster and more exhilarating ride. Compact and Portable: Weighing just 36 grams(18-32C), 45 grams (32-47C). Weighing and occupying only 1/3 compared to butyl inner tubes, our TPU tubes are exceptionally lightweight. It ensures that your ride remains free from any additional weight, all while delivering outstanding performance. Plus, it allows you to stash multiple spare tubes in your cycling bag effortlessly. Concerned about TPU inner tube quality? Don't worry!.We offer a 12-month refund plan, 1 defective = 30% of Money back, 2 (60%), 3 (90%), 4 (100%) for 4-Pack Kit; 1 defective = 60% of Money back, 2 (100%) for 2-Pack Kit; Installation Tips: Inflate slightly before installation to check for air leakage. During installation, inflate to 0.35 bar(5 PSI) first, ensuring the inner tube is close to the tire's inner wall. Adjust the inner tube by pressing. Avoid heavy inflation without a casing to prevent irreversible damage; exceeding 0.35 bar(5 PSI) will cause irreparable expansion. Packing List: Each package contains one inner tube and two patches. Overview Brand : Inkesky Valve Type : Presta Material : TPU Wheel Size : 622 Millimeters Item Diameter : 622 Millimeters
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