Description: Premium black PVD overlay and nickel plating helps ensure superior corrosion protection. Constructed of precision-machined and hardened steel. Vehicle specific key patterns resist lock removal tools and allow only a single unique key to interface. Precisely machined and weight-balanced to help secure your wheels and tires against theft. Special key tool and collar guide enable simple, five-minute installation. Resistant to lock-removal tools and secured by a single unique key.