OK, first one went pretty quick. This one is weird, and like the first, it was given to me and I have no idea what it is. This thing is spring loaded to close, I'm holding it open in the pic. There's a closed loop to the left, like a triangle, flopped over and a hook to the right. The hook spins as it is pulled out against spring tension, but there is no ratcheting mechanism. The hook spins back the other way as it goes in.