Inner tube 20 x 1 1/8 and 1 3/8 from Schwalbe - SV7A, presta valve

20 inch inner tube for narrow diameter tyres

Weight: 105g

Why choose this inner tube?

Because not all inner tubes are the same.

Schwalbe test all tubes (twice), including inflation for 24 hours to ensure they don't lose air pressure.

Less lost air means less time inflating and more time for you, whether it's riding, in bed before work or at the office.

Manufacturers code: SV7A

This inner tube fits ETRTO tyre sizes as shown below:
37-438 - 20 x 1 3/8 inch
28-440 - 500 x 28A
37-440 - 500 x 35A
28-451 - 20 x 1 1/8 inch
37-451 - 20 x 1 3/8 inch

Valve length: 40 mm