I wanted to add another keyboard to my existing stand, and after checking the diameter with Thomann (who always reply promptly in my experience), I ordered this. There wasn't an option which was the same length as my stand, so this one was longer than I needed. It only took a few minutes to cut it to size, and it fits perfectly and works very well. I like the fact that the end connectors/clamps can be taken apart completely, which means fitting them to my existing stand was easy. Everything seems well made, and the keyboard movement is minimal.