broken reverse band?

here at the end of my screwdriver is the part I was talking about that is loose and almost seems to want to fall out but wont no matter where I put the lever....Or is this just the other side of 917-1........Also, I can touch the band itself with my fingertips and spin it around the "drum"? sorry, don't know if that is the correct terminology....I felt on top of the valve body but couldn't feel anything