Very stable and sturdy base. Easy placement of the phone and a feeling of additional safety with the use of the rubber fastenings even at high speeds. It doesn't shake, it doesn't creak, and it can be practically adjusted to any angle/position. Definitely worth it.

It is quite stable and small. Of course, it takes a bit of effort and you have to put a rubber band to tighten the aluminum base with the plastic that attaches to the handlebar, which I find somewhat strange considering that it is a base that costs 40€ and not some Chinese product.

I have had it for a year and I am very satisfied. I use a hard plastic case on my phone (not silicone) and the phone is very stable. It is very easy to put on and take off the phone. I was afraid that the rubber that holds the phone on the case would wear out quickly, but after a year of constant exposure to sun and rain, it has not been damaged.

19/11/23 UPDATE: After two years of use, I remain equally satisfied, everything still works perfectly.

Excellent base.
It is entirely made of aluminum.
I have tested it off-road on very difficult terrain and it did not move at all.
It has rubber pads in all the areas where the phone touches, so there is no chance of scratching it.
If you have a thick case on your phone or a base with a door, there is a (big) possibility that you will need to remove the phone from the case.
The good thing about this base is that it has a very low profile, so it is perfect for applications on a bar above the instruments, where you don't want the phone to protrude too much.