.... That the openings between the legs is more closely, the smaller the bore. There is this beautiful large GU10 sockets with black plastic housing and cable grommet. As you should well before Measure to fit, otherwise there's quite a Gewurschtel until the LED / Halogen Spot incl. Version is properly seated. Otherwise, the part is ok The feet have below a small punch to be forced into the sheetrock. Sometimes it'll work, sometimes not so real. With wood, you can forget it, but the thorns are too soft. I have been using the spacers to push in the hollow ceiling insulation a bit upward. When it comes to the spacer gets enough pressure from above and also holds. Without this pressure, the risk is great that he slips, and tumbles around in the ceiling.