3、PROCESS AND MATERIAL:Forged from 6061-T6 aircraft-grade aluminum,providing more aggressive and safe driving than casting wheel spacers.with 10.9 class stud. 4、AGGRESSIVE DRIVING EXPERIENCE:Not only make your ride feel even than before the wheel spacer was installed with no rough or bumpy you will feel going over rugged terrain.But also provide your vehicle with a more aggressive stance and appearance.