Adorn your Oldsmobile wheels with this leading edge technology in design, function and virtually theft proof. The cap within a cap is built on strong ABS plastic. Good on snow and salted road. Better than metal. Fade-resistant highly detailed Oldsmobile logo protected by super-hard polycarbonate. Plastic keys that enable you to secure the caps onto your valve stem, making it almost impossible to steal. 4 caps and 2 locking keys included with each set.