Maybe I'm misunderstanding the terms "single chain" or "single ring" but these screws literally fell off during my short ownership. I used them on a 130BCD (SRAM S300) "tracked" system as I saw them in one of the other reviews. I figured they would work and look great doing it. And so it was. In two weeks. I found them to slowly loosen from vibration and I tightened them properly on my LBS and even they didn't mention any compatibility issues. However, I am very disappointed that I have invested in a similar type of bolt designed for the SRAM Omnium as I have had good experiences with them.
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