RBM rbm2(remove wrote:
If you buy a fixture swag kit, you will get hooks and studs with toggle
wings and things called gimlets, which is a screw that is half machine screw
and half wood screw. If you have a drill, you can buy a 3/16 inch carbide
masonry bit to drill the concrete, then use a 3/16 plastic anchor, which
goes in the hole, then you screw the gimlet to the hook and screw the
assembly into the plastic anchor in the ceiling and you're done

I did buy one of those kits, but was unconvinced that a plastic anchor would
have sufficient holding capability when used in a vertical orientation.
They seem to work their way out of drywall (horizontal installation) over
time, so I wasn't sure about using them overhead.