This tiny object enables you to fix the typical 6x4mm 2 wire lamp cables to a panel ceiling without the need for making holes or using glue.
The flat end of the clip slides into the groove of the panels and is held there by the spring of the next panel. See pictures for explanation.
These clips print fine in PLA, but if you rip the cable off the ceiling (for whatever reason), the PLA clips break and leave parts stuck in the ceiling. If you use ABS, the clips bend, slide out and can be used again.