General description Continental's high-quality butyl tube features a removable valve core, making it ideal for touring, commuting, and gravel riding. Each tube is seamless and mold-cured (vulcanized) to ensure uniform roundness and improved reliability at the valve stem. Every tube undergoes a stringent 100% quality control inspection to guarantee performance. The Hermetic Plus option contains a higher butyl content and increased wall thickness, which enhances air retention and puncture resistance. Technical specifications Size: 26 x 1.3-1.75 inches Valve type: Schrader Valve length: 40 mm