This product is a Genuine BMW Base Roof Railing Rear Right, part number 51137207246. It is designed to fit on the rear right side of a BMW vehicle and is finished in black. It is a base railing for the roof of the vehicle, providing a secure and sturdy attachment point for roof racks or other accessories. This product is an authentic BMW part and is made with high-quality materials to ensure durability and reliability. It is compatible with various BMW models and is an essential component for those who frequently transport items on the roof of their vehicle.