Schwalbe Inner Tube Standard Tour 28 Inch French 50mm - SV17/40-609*, 28-622, 30-622, 32-622, 37-622, 40-622, 42-622, 47-622*, 32-630*, 40-635*. Schwalbe inner tubes are reliable. Bicycle retailers value them for their high reliability. Every tube is inflated at the factory and tested for airtightness for 24 hours. The tube holds air pressure longer. In production, Schwalbe requires a very high butyl content and very high material purity. This allows the Schwalbe inner tube to hold air pressure significantly longer than other inner tubes. It is a grouped inner tube system: A Schwalbe inner tube is extremely elastic and fits multiple tire sizes. This is why they are called grouped inner tubes. For example, inner tube number 19A fits tire sizes from 27.5 inches to 29 inches and for widths from 40 to 62mm. Finally, the tube is 100% fully recyclable. Standard version: High reliability, proven for many years. *Not available in the Extralight version. Schwalbe standard inner tube no. 17. For bicycle tires in size 28" inch/700C (ETRTO 28/47-622/635). Particularly suitable for TOUR, CITY and TREKKING tires. Holds air longer than average. Thanks to the best material quality and uniform wall thickness. Maximum reliability that has proven itself millions of times. The Schwalbe standard inner tube no. 17 is suitable for bicycle tires in size 28" inch/700C (ETRTO 28/47-622/635). This inner tube is particularly suitable for TOUR, CITY and TREKKING tires and holds air longer than average thanks to the best material quality and uniform wall thickness. Maximum reliability that has proven itself millions of times. Inner tube with SV valve. Particularly suitable for TOUR, CITY and TREKKING tires. Holds air longer than average. Schwalbe Article number: 740088 EAN code: 4026495964388 Supplier number: 10463353 Retail packaging: No