This Rolex 29-205-105 O-Ring Case Gasket is a genuine part made in Switzerland. It is compatible with various Rolex models such as 69138, 69139, 69148, 69168, 69169, and 69178. The gasket is made of rubber and comes in black colour. It is a crucial component for the case of your Rolex watch, ensuring a proper seal and preventing any leakage. This 10-piece gasket is a reliable replacement for your old or worn-out one. Keep your Rolex watch running smoothly and efficiently with this high-quality O-Ring Case Gasket.