These locks are very basic and appear to work. They are reliable, flashy and require serious effort to defeat, but they are not very easy to use. My only real complaint is that it's a little hard to get the locking mechanism to engage. There are only a few holes that the lock fits in to secure the car. If you get that right, great. Otherwise you need to configure and try again. and again. Not ideal when it's dark or rainy, but not the end of the world. I would definitely buy them again, but they could be a little better.
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