That's standard for tried and true crossbar manufacturers like the Thules, Kuats, and Yakimas of the world, assuming the product has a security feature. I wouldn't say that's standard across the board for all accessories for all auto manufacturers though. It depends on the design requirements of...
Hi, I helped the team designing these bars. There is a double digit number of unique key combinations and you received two sets with the same combination. Security was a high priority during the design process. Hope that helps.