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. 2、Perfect Fit:1995-2000 for Accent 1992-2000 for Elantra 1989-2000 for Sonata 1997-1999 for Tiburon 2001-2004 for Optima.