These hooks are designed to mount LED strips on the underside of a bed with slats. The S-shaped hooks are for the top and bottom of the bed and the other style is for the side of the bed.

These hooks work best on slats that are about 1 cm thick and light strips that are about 1 cm wide and 2-3 mm deep. These are the light strips I used: https://www.amazon.com/gp/product/B07FVP54GQ/