I am very pleased with this security locks, it makes taking and putting the strap back a lot easier than the strap blocks that I was previously using.
The instalation process was very easy as well, all you need is an Allen wrench and a tiny screwdriver and you're ready to go. The screw and the strap button are all the same piece which is very convinient. The instalation of the locking system is very easy and a no brainer at all. It consists on the main piece that you have to pull in orther for you to unlock the strap and the wheel that you use to secure it. I that same wheel there's a tiny screw, that you're going to turn using that screwdriver I previously mentioned.
If your strap happens to brake and you have no time to switch the locking system from one strap to another, you can always go back to use it like any other strap button, but I advise you to have strap blocks lying arround just in case it happens, that or you buy a second locking system, if you don't mind spending an extra money to just be prepared.