26 inch x 1 inch and 650 x 18 to 25mm race inner tube from Continental
This inner tube fits ETRTO tyre sizes as shown below:
18-571 - 650x 18C
20-571 - 650 x 18C
22-571 - 650 x 22C
23-571 - 650 x 23C
25-571 - 650 x 25C
25-559 - 26 x 1
Valve length: 42 mm
Weight: 105g
Made in Taiwan