Led Spot Lamp adapter

Recently I've bought an adjustable spot led lamp.
This lamp is focusable from 15° to 60° and quite useful for reading at night without disturbing or shade light in a little part of the walls of your home to enhance details.

I've build this think to fix the lamp in a quick way to the walls or to wooden beams and let the wires come out laterally to connected to a power outlet.

The bottom 65mm round metal part is connected to the adapter using two or three M3 screws with little washers.