20x2.00/2.50 (50/62-406) AV 34 mm Wide 0181271 Continental 20" 50-406, 20 x 1.90 54-406, 20 x 2.10 57-406, 20 x 2.125 64-406, 20 x 2.5 CONTINENTAL Compact 20 WideCycling without an inner tube is possible, but not rideable. Therefore, you should always carry a spare inner tube when you're on the go. Make sure you have the correct tire size! The correct size is usually indicated on the side of the outer tire. The dimensions are often used. The first two digits indicate the correct tire width. The following digits indicate the outer diameter of the tire. For the Compact 20 Wide, this is 20". For the valve and the correct length, it is best to use the old inner tube as a guide: the Schrader AV valve on the Compact 20 Wide is 34 mm.Width inch 1.90, 2.10, 2.50, 2.125 ETRTO 50-406, 54-406, 57-406, 62-406 Main color black Valve type auto (AV) Type/kind Article Valve length 34.0 mm Wheel size 20"Continental Article number: 692359 EAN code: 4019238556360 Supplier number: 0181271 Retail packaging: Yes