Razer Kraken V4 - replacement hinge bracket

Hello,

I do own Razer Kraken V4. My left ear hinge/bracket (that part which could be pulled out or pushed in, with numbers engraved on it (1~7)). I need to replace it, but I can’t find it anywhere. 

Replacement seems to be easy, just two screws and sensitive fingers ;-) But the part itself couldn’t be found anywhere.