Originally Posted by
Bezalel
Every Bell boxed tube I've gotten there was either a CST or Kenda tube. Looking closely at the mold lines they look like they're made in the same molds

EXACTLY. I bought some on a Sunday once (700-25 size, presta valve) because I didn't have any spares and the bike shop was closed. They are the same quality as any other tube. That said, they are the same price at the bike shop or online.