Base that you cannot rotate when you place it on the handlebar resulting in the camera looking right or left instead of straight ahead. It needs to be adjusted to a point on the bicycle that is perpendicular to the handlebar, which is impossible on many bicycles

Update 6/11/2019.

My mistake, I didn't notice that it has another inner rubber insert. So it works fine for a pipe up to 35mm. It continues to hold up without any problems.
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It is only suitable for pipes up to 25mm and not up to 35mm as mistakenly stated in the specifications. Unless you decide not to use the inner rubber insert at all. In this case, something will break quickly, for sure. The result is that for 3 hours I was futilely trying to fit the rubber to a 28mm pipe.
Overall, it seems durable and of good quality, and so far it has held up, whereas similarly 'Chinese-designed' ones broke in 10 minutes.

Unreliable piece of plastic!

I had it for less than a year on my bike and it broke during a mountain ride, on a jump.
I was looking for the camera for about an hour and luckily I found it in good condition.

If you are looking for a similar mount, there are metal ones of much better quality for the same price!