New replacement part for you Sony ULT WEAR 900N hinge swivel repair part. This part may break over time from swiveling and twisting. 

• Brand: JoesGEcom for Sony
• Fits Model: ULT WEAR 900N 
  Fits Model Numbers: WHULT900N/B (Black), WHULT900N/H (Forest Gray), and WHULT900N/W (White)
  
• Color: Black, Gray, & White. 
• Part: Arm Hinge Swivel Hanger