Description
Schwalbe inner tube Standard 18×1 3/8 French – SV4/37-340, 28-349, 35-349, 37-349, 28-355, 35-355. The Schwalbe inner tubes are reliable. Bike retailers value them for their high reliability. Every tire is inflated in the factory and is then tested for airtightness for 24 hours. The tire retains its air pressure for a longer period of time. In production, Schwalbe requires a very high butyl content and a very high purity of the material. This keeps the air pressure in the tire significantly longer than other inner tubes. It is a group inner tube system: A Schwalbe inner tube is extremely elastic and fits multiple tire sizes. This is why they are called group inner tubes. For example, the inner tube with number 19A is suitable for tire sizes from 27.5 inch to 29 inch and for a width of 40 to 62 mm. Finally, the tire is 100% completely recyclable. Standard version: High reliability, proven for many years.
