I have a Yamaha electric drumkit in the DTX series (can't tell for which one without checking the manual) and I wanted to place more pieces in the frame. The RCL500 clamps were not exactly the same model of clamps that came with the original kit but seeing as the gap had the same width I gave it a try.
They fit the width of the frame perfectly. The only reason my score isn't higher is that, even with the adaptor screw fully loose, it does take some twisting and turning and pushing before you get the clamp to the desired height or length along the frame. But other than that, it does quite well with my drumkit.