I am hoping some one can look at this picture and tell me what I have so I can look for a replacement. We have a spa attached to the pool and in the spa are 4 jets and this eyeball fitting. I have had to remove all of them to clean out debris from behind them. When I removed the eyeball fitting I found this screw behind it. It looks like to me that the screw rusted off and fell behind the fitting. However the bigger question is what type of eyeball insert is it? Because there are the four spa jets in the spa I am wondering if originally this eyeball had a baffle or orifice on it to close it down when the spa jets are in use?