It is supposed to work with any rail system, but the square nuts to slide into the rails were too wide. Looks like they were cut too big as the hole wasn't in the middle either. I had to cut about 1/16th with an angle grinder to mount the rails on the roof. Our screws are also too long and I had to cut off about 1/4 inch so they could be tightened into the rails on the roof. They serve their purpose now, having been repaired with a cutting wheel, but they are overpriced compared to what I got.
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