What I reproach this support is its game at fixing. On granular road it's been a crazy racket. Even try mountain biking, I think it would end up in the ditch.
As for the so-called universal ring I have transpired to fix my gallows. Station to large diameter!
6 months after this comment, I lost my iphone to 50 km / h on a grainy road. He exploded on the ground. luckily he has the broken glass (79 euros), it works nickel.
For me it ended.
