These had so much potential but they're absolutely useless. They way too fiddly; i found it actually impossible to put on because my ****** would just slip out while trying to tighten it down, or would just kind of slip out as soon as the slightest amount of pressure was put on. Unless you have super-long nipples there just isn't room for your fingers to get in there to tighten without everything falling out. I never actually was ever able to get these on. In addition, even if you were to get them on, they'd be lopsided; I had hoped when tightened the two ends with the balls would be relatively even, but you'll end up with a zig-zag unbalanced thing rather than a nice # shape.
I reeeeally wanted them to work. I was hoping to find a clamp that wasn't as bitey as the typical clover clamps while still being tighter than you can with the straight-nosed ones. Bt this was a disappointment, especially for such a high price tag. Honestly, they're going in the drawer to be forgotten about forever.