Just bought this a month ago and have been enjoying it ever since. The tools are very practical as I work on aircraft and it can be burdensome to carry wrenches and screwdrivers around all the time. I especially like that behind each link the size of the screwdriver/wrench is written, so if I need to get a ratchet, I can measure the size of the bolt with the Vulcan Trak and then select the appropriate socket. The SIM card pick is an excellent idea. It would be nice if the Vulcan Trak had the bottle opener system without having to take the bracelet off. Overall, I would not hesitate to buy another if I should lose or give away the one I have.