Get your semi Ready for the Road Ahead™ with ultra-secure lug nuts, with the Brake Safe 3-1/2" Zafety Lock Lug Lock®. Thanks to its proprietary design, this lock is able to prevent a wheel's lug nuts from rotating or loosening while driving. Crafted with specialized plastic to remain flexible in both hot and cold environments. FleetPride is your First Click in Heavy Duty®.