I bought 4 of these bad boys which I want to attach to my concrete ceiling (Oriel Baril LED Adjustable Spotlight). They are pretty lightweight.
Mounting cup diameter is 80mm
However, the mounting cup internal bracket screw hole distance is just 46mm
Here's the snag: The ceiling hole diameter is 60mm and too wide, so I'm missing some ceiling to screw into. With this width I can only get a single screw in.
What are my options?