The part is designed to cradle the Olight H2R Nova magnetic charging clip, and secure it to a surface so the flashlight can be grabbed with one hand at a moments notice. It was designed for 20mm suction cups (ADAMS Mini Suction Cups UPC 037063004010), with the clips removed. The suction cups go into the holes on the bottom, and slide towards the outer edge to be locked into place. When I assembled mine I had to trim some rubber off of the top of mine in order for them to fit properly.