The product is a genuine BMW 2014-2020 M3 M4 Competition 666M rear 20" alloy wheel, with a diameter of 20 inches and a width of 9.5 inches. This one-piece wheel features a negative offset of -20, a central bore of 0, and five studs. Made from high-quality alloy material, this wheel is designed for the 4 Series model and is a perfect replacement part for those looking to upgrade their vehicle's performance and style. The wheel is a genuine BMW product, originating from the United Kingdom, ensuring top-notch quality and compatibility with the specified vehicle models.