This product is a genuine BMW 3 4 Series 19” rear wheel made of aluminium alloy with a one-piece construction. It has a stud diameter of 120, a wheel offset of 36, and a diamond cut finish. This wheel is designed to fit BMW vehicles with a wheel diameter of 19 inches and a width of 8.5 inches. The manufacturer part number is 6857565, and it is not a custom bundle or a modified item. Made by BMW, this high-quality wheel is a perfect choice for any BMW enthusiast looking to upgrade their vehicle's performance and style.