I changed the old jammed lock in the entrance doors, I was satisfied with the result of the replacement. Everything was explained correctly before choosing and installing a new lock, the factory packaging of the Elbor lock was opened in front of me, I personally opened the bag with the keys. The installation of the new lock took about an hour, after which I checked the result and all 5 keys to open the door, everything went well here without any questions. At the end, a contract and an act of completed work were drawn up, where the amount of work and the cost of the lock were indicated, and a half-year warranty also applies. I do not regret that I chose this particular company to solve my problem with the lock!!!