I bought this for my carrier Audi A3 SB 2006 model year. The carrier fits perfectly on the attachment points of the integrated rail (each 2 holes in a distance of about 5 cm), optics and processing very well, makes a very stable impression and is the version made of steel (Montblanc 747 023 Performance Ready Fit 23 for 119 ) optically, mechanically and aerodynamically superior and worth the extra price.
Tip: The railing is not damaged by the carrier, since the holders are rubberized, provided you have wiped clean the rail before installation.
One-man installation without "roof damage" possible.
Only one cap for the aluminum profile was loose, could issue but by bending the "barbs" are resolved.
