Very good bling. Very 'gold', very shiny and the abalone is stunning. I do not know what metal they are made from but they are extremely heavy.
Unlike the Q-Parts mini version, which sits too high off the surface of the guitar, these permit the potentiometer washer and nut to be hidden up under its lower 'skirt' to a greater degree, thereby reducing the gap between knob and surface and looking less stupid and unsightly.
However, the lower 'skirt' could even be another millimetre or two longer, so one star removed.