Very good quality plastic and the chain is a much better solution than the silicone that the original had. The plate fits perfectly and the shell snaps in very well.

Very good solution for those whose "tail" has been cut off in the original. Although the plastic doesn't seem as good as the original, it is quite sturdy and the price is excellent.

During the change, the circuit may possibly become desynchronized and require synchronization with the car in order to work again. All 4 of mine needed it. It's an extremely simple process - while you are very close to the car, you simply press both buttons for 10-15 seconds and as soon as they stop flashing, you press the big button. After that, it will work normally again.