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 Harwinton key duplication services. However, that happens because the services they offer you are bundled together with a lot of guarantees.