Fits neither picatinny nor weaver rails - Presma Quick Release Scope Rings for Picatinny/Weaver Rails

These quick release scope rings won't work with Picatinny or Weaver rails. They'll "fit" the Picatinny rail, but you can't lock the ring down. Cam is too tight. I tried on three Pic rails with the same result.
They won't even begin to fit over Weaver rails to attempt tightening the cam.