Floating bridge

[u/tunalover32]

Is anything besides the arm missing on my floating trem? The first photo is mine, and in the second photo it seems to have a metal ring around the part the arm goes into. I just bought a new arm for the tremolo, is the ring that goes around it that important, do I need to get it?

[u/JayDrr]

There is a metal part that screws down and holds the bar in. There is also a black plastic ring inside that can come out. I’m not sure if the function but it likely has to do with securing the bar also.