General description Continental's high-quality, lightweight butyl tube features a removable valve core, making it ideal for racing applications. Each tube is seamless and mold-cured (vulcanized) to ensure uniform roundness and enhanced reliability at the valve stem. Every tube undergoes a stringent 100% quality control inspection to guarantee performance. Technical specifications Type: Butyl tube Valve: Presta 60mm Size: 700x20-25C Color: Black