Opened them up and was very happy to fit them to my crossbars for kayaking this weekend. Then I got angry and cried. I have square bars and don't have a Flipfit adapter (which, when I spoke to the Thule dealers, mentioned that it had to be included with many other accessories to fit different types of handlebars), so I had to call many different shops, locally and online to find adapters. Although it wasn't available in most places. However, I think I've found a few online that will hopefully work because to return this "set" I have to pay about $200 in shipping and handling! So PPE DO NOT WORK FOR THULE SQUARE BARS. It would be nice if this was mentioned in the description.