Hard, one piece black plastic. Approximately 1 9/16" X 1 15/16" X 3/8" not counting the metal. Has 2 Allen head bolts? pins? but they don't hold anything. I haven't tried to remove them yet but the plastic they go into is one piece. The metal in the middle has what I would call a bail swivel (kinda like what a bucket would have, except smaller of course) on one side, and just a nub sticking through the other side. The hole it goes through is slotted and about 1/2" long, so, I assume it was meant to slide or be adjustable. The short edges are flat/smooth, the long edges have an angled V groove, like this piece was supposed to be mounted in a metal framework. The back side with the nub sticking through has 4 softer rubber inserts with a waffle type (non-skid?) Pattern on them. I believe they're glued into a slight recess in the hard plastic, but, I haven't tried to pry them out to be sure. Those 4 inserts stick up slightly above the surface of the hard plastic. Don't think it's worth anything, but, I haven't seen something like this before and thought I would ask all you brainiacs out there!
