Very heavy, stable and sufficiently long lock

I bought the castle, as my old ABUS lock after 3 years the key is canceled. I hope this stops now longer, but also make the enclosed with this product key is no better impression. Even with my 70 Euro Folding the same problem. I really hope that there ABUS nachbessert and the material of the key adjusts the price of the castle.
Now the castle itself:

Length: The castle is sufficiently long in order to connect the rear tire and frame bar with a lamppost or other pile.

Links: The links are hidden under the protective mantle (paintwork) and feel sufficiently thick. So far, the bike is still there.

Mechanism: Unfortunately, the lock jammed something in the beginning. But WD40 helps. Would I from at every lock from ABUS and recommended, just to prolong the service life of the key.

Conclusion: Despite the known key problem, a very robust and good lock.