22" x 1 3/8" Inner Tube for Wheelchairs
- This size is most often used for 22" Wheelchairs
- Presta valve type (AKA High Pressure Valve or French Valve).
- Standard length valve suitable for most rims up to a maximum 30mm deep.
- Reinforced dual thickness tube/valve interface to prevent punctures.
- Standard weight butyl rubber construction.
These innertubes are compatible with the following ETRTO tire sizes:
22 x 1 3/8" NL = ETRTO 37-489
22 x 1 3/8" = ETRTO 37-490
550 x 28A = ETRTO 28-490
550 x 35A = ETRTO 37-490
22 x 1 3/8" = ETRTO 37-501
As you can see this tube will fit both the ETRTO rim sizes 489, 490 and 501mm. You may know that rim and tyre sizes must match each other exactly, but due to the flexibility of an inner tube they can often fit more than one rim size.
Click to find out more about ETRTO tyre sizing and whether this is the right tube for your bike.