For BMW 120i 2016-2018 Brake Rotor | 20 mm. / 0.79 inches Nominal Thickness
Product Info: Part: Brake Rotor Center Hole Diameter: 75 millimeters / 2.95 inches Discard Thickness: 18.4 millimeters / 0.72 inches Nominal Thickness: 20 millimeters / 0.79 inches Outside Diameter: 300 millimeters / 11.