Review on Set Of 10 Retrofit Recessed Downlight C Clips With Metal Screws - Ideal For Down Light Can Installation (Includes 5 Pairs) by Jeff Robeson

The spring mounts in the store bought cans are recessed 1-3/8” from the ceiling edge of the can. I measured up to there, placed a mark, aligned bottom of the C Clip with the mark and marked the drill location with a sharpie. The standard drill was at an angle and wandered all over. A 90 degree impact drill that allowed the drill bit to be perpendicular to the mark solved that problem, plus an opportunity to buy more tools! To finish I used a stainless steel pop rivet instead of a screw. The spring mounted LED fit tight and flush. This specialty part is hard to find. It would be perfect, and I would happily pay more, if it was made from a little thicker metal, like the store bought recessed can lights.