The product is a Genuine Rolex 455 B End Link made of 18k gold and stainless steel, specifically designed for a 20mm watch bracelet. These end pieces are compatible with Rolex Datejust models and are crafted in Switzerland, showcasing the high quality and craftsmanship expected from Rolex. The combination of 18k yellow gold and stainless steel ensures durability and a luxurious aesthetic, making them a perfect addition to any Rolex watch collection.