Adjustable Power Cable Ceiling Mount

A simple ceiling mount for hanging a lamp.

If you do not want the big cups to hide the cable adjuster, and want smaller holes in your ceiling, this can be the solution.

Hole in ceiling: 3cm
Diameter for cable: 8mm
Thickness of ceiling: 10mm (or thicker, depends on bolt length)

Additionally needed:
Tightning imbus screw: M5
Imbus bolt: M4 (length 40mm or more)