I did not at first think the adjustable bar could possibly stay in the track without falling out. The ends are rounded and slick...but once installed on the wall with the correct spacing/pressure it works beautifully! It's really a very pretty style and looks great with the matching  7 inch towel bar and robe hook. Makes the bathroom look well coordinated. 

Pros: Bright shiny chrome, elegant curve design. 
Cons: None so far!