The product is a set of 20" BMW 3 Series M3 M4 Machined Black 826 Design Staggered 8J 9J Alloys, featuring a concave style and made from aluminium with a low pressure cast construction. The black wheels have a glossy finish and come with a manufacturer warranty of 1 month. With a centre bore of 72.6 mm and stud diameter of 120 mm, these stylish wheels are designed for optimal performance and aesthetic appeal on the BMW 3 Series M3 M4 models.