Brake Disc Thickness: 28 mm; No. of Wheel Bolt/Stud Holes: 5; No. among others suitable for: Saab: 9-3 II, 9-3 II 4WD, 9-3 X, 9-3 X 4WD; Opel: Signum, Vectra C; Vauxhall: Signum, Vectra II. OE numbers (for comparison purposes only): Cadillac 93175606; GM/Opel Zeichnungsnr.