Vacuum Cleaners Discussions

This is with respect to a Rainbow if it matters.  Can someone tell me the name of the bent metal tube attached to the hose?  It connects the hose to the two-section wand holding various attachments for non-power head vacuuming.  Mine has finally corroded through after 29 years of use - probably vacuuming up liquids once in a while hasn't helped the longevity - and I'd like to call it the right thing when I go to purchase a replacement.

Thanks for any input.

Art