49N Tube 24" x 1 1/8" - 1 3/8"

Picture is generic.

This tube is 24" x 1 1/8"- 1 3/8". This is compatible with older small/juvenile road bikes (520mm, 540mm). It is also a very common wheelchair size. It is not compatible with the 24" mountain bike size (507mm).

Schrader valve.