The Schwalbe Tube No.12 fits 26" and 27.5" tires with a width of 32-47 mm and is used in various types of bicycles, including mountain bikes, city/trekking bikes, and e-bikes. Thanks to their excellent manufacturing, Schwalbe tubes have proven themselves in the market for years. They have uniform wall thickness and are round in shape. Due to their precise assembly, they are durable at the seams. A comparative test showed that the Schwalbe tube maintains air pressure significantly longer than other tubes (other tubes lost almost twice as much air pressure as the Schwalbe tube in 30 days). One possible reason for this could 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 airtightness - 24-hour test for each tube - High elasticity allows for coverage of many tire sizes per tube - Recycling process achieves very good energy balance **Suitable for the following tire sizes:** - 47-559 | 6 x 1.75 - 47-559 | 26 x 1.80 - 47-559 | 26 x 1.85 - 47-559 | 26 x 1.90 - 40-571 | 26 x 1 3/8 x 1 1/2 - 40-571 | 26 x 1 1/2 CS | 650 x 38C - 47-571 | 26 x 1 3/4 | 650 x 45C - 47-571 | 650 CS - 32-584 | 650 x 32B - 35-584 | 26 x 1 3/8 x 1 1/2 | 650 x 35B - 35-584 | 27.5 x 1.35 | 650B - 37-584 | 26 x 1 1/2 x 1 3/8 | 650 x 35B - 40-584 | 27.5 x 1.50 | 650B - 47-584 | 27.5 x 1.75 | 650 x 45B - 32-590 | 26 x 1 1/4 | 650 x 32A - 37-590 | 26 x 1 3/8 | 650 x 35A - 40-590 | 26 x 1 1/2 | 650 x 38A - 44-590 | 26 x 1 5/8 | 650 x 42A **Valves:** - AV = Auto, Schrader - DV = Dunlop, Blitz, German valve - SV = Sclaverand, Presta, French valve (40 mm) **Delivery includes:** - 1 x Schwalbe Tube No.12 including valve.