The Schwalbe Tube No.19 fits 27.5", 28", and 29" tires with a width of 40-62 mm. It is therefore suitable for both touring bikes and mountain bikes. Due to their excellent manufacturing, Schwalbe tubes have proven themselves in the market for years. They feature consistent wall thickness and round form. Their precise assembly makes them durable at the seam. A comparative test showed that the Schwalbe tube maintains air pressure significantly longer than other tubes (the others lost almost twice as much air pressure as the Schwalbe tube within 30 days). A possible reason for this may be a lower butyl content in the other tubes. The special quality of Schwalbe tubes arises from the uniqueness of their rubber compound. To ensure this high quality, each individual Schwalbe tube is inflated and checked for at least 24 hours before leaving the factory. Features: - Butyl rubber ensures double the air retention - 24-hour test for each tube - High elasticity allows coverage of many tire sizes per tube - Recycling process achieves very good energy balance Suitable for tire sizes including: 50-584 / 27.5 x 2.00 / 650B 54-584 / 27.5 x 2.10 / 650B 57-584 / 27.5 x 2.25 / 650B 60-584 / 27.5 x 2.35 / 650B 40-622 / 28 x 1.50 / 700 x 38C 42-622 / 28 x 1.60 / 700 x 40C 44-622 / 28 x 1.625 / 700 x 42C 47-622 / 28 x 1.75 / 700 x 45C 50-622 / 28 x 2.00 55-622 / 28 x 2.15 57-622 / 28 x 2.25 60-622 / 28 x 2.35 62-622 / 28 x 2.40 40-635 / 28 x 1 1/2 / 700 x 38B 47-622 / 29 x 1.75 / 700 x 45C 50-622 / 29 x 2.00 54-622 / 29 x 2.10 57-622 / 29 x 2.25 62-622 / 29 x 2.40 Valves: - AV = Auto, Schrader - DV = Dunlop, Blitz, German valve - SV = Sclaverand, Presta, French valve (40 mm) Package contents: - 1 x Schwalbe Tube No.19 including valve