The Flexi is collapsed 34cm long and can be extended by pressing a button on a total of 55cm.
But since most cabinets are 60 cm + deeply missing the crucial centimeters to eg beside a cabinet on the wall is close to all the way to suck back.
The nozzle resting in both end positions a strong and must be unlocked by each button.
The extractable part is made of flexible rubber.
The small brush can also be removed by pressing a button.
I use the brush mainly with our Dyson CD62 cordless vacuum.
Since no dirt remains lying, the suction power is more than enough, the rubber part remains stable even at maximum extraction level and does not collapse.
Because there is no long brush of this kind, I would buy this again.