The Schwalbe Tube 6 is a high-quality standard bicycle inner tube for 20 inch wheels. Thanks to the high-quality butyl material and the uniform wall thickness, this inner tube retains air for an above-average period. This ensures less frequent inflation and maximum reliability, as proven millions of times by Schwalbe. Specifications: ETRTO: 28/40-406 Wheel size (inch): 20 Valve type: AV (Car valve) Valve length: 40 mm Inner tube type: Standard Material: Butyl Weight: approx. 95 g Article number: 6 Schwalbe Article number: 740215 EAN code: 4026495930000 Supplier number: 10462500