When it comes to the duplication of keys, you need to make sure that you find an absolute professional, someone who has been in the industry for a long time. This is one of the reasons why you also need to spend some time on research. You will realize that professionals will often tend to charge you a bit more than most of the other locksmiths when you are looking for South Lyon key duplication services. However, that happens because the services they offer you are bundled together with a lot of guarantees.