Kerrville 
Riccar Radiance/Brilliance Hose Extension Kit for Tendem Air Vacuums
When your Radiance or Brilliance vacuum hose doesn't stretch quite far enough, the Tandem Air Extension Hose snaps into your vacuum to expand your cleaning reach.
Fully extended, you'll have an extra 7 feet of hose for Tandem Air upright Radiance and Brilliance models.