The packaging by Amazon was good and none of the sticks was damaged, as was the case with other reviewers.
Installation works super easy, are merely to solve a few screws. Is made in 10min. On the Internet, there are numerous videos, if assistance is required.
To the product:
The sticks are similar to the originals very strong. (See photos) but you feel less robust. Whether this has consequences for the durability, I can not say at the time. If a stick gets broken, I will update the review. Playing feel is very good, you do not necessarily recognize that they are not the originals.
A drawback, however, namely the sticks have the attachment. The pick-up point of the stick is slightly larger than the originals. Thus, the sticks can move in the built-in controller up and down. This sucks a bit. Very small drop of glue can provide a remedy, but is of course not an optimal solution.
I have attached photos, where the difference between the sticks can be seen.
Conclusion:
Price-performance ratio. For little money (5 euros for 4 sticks) can save his controller. Small compromising the quality you have to do this, however. (see above)