The mount does what it should, if you put before the assembly site a piece of old bicycle inner tube (if you want to use it on a mountain bike off-road, for example, otherwise it slowly slides through) One should put the cable tie with pliers very strong! There is of course the internet also foreign producers of high-quality mounts (with attenuation / metal) secure the well a fall, but here you have is then up to 50-80 EUR and more!