Ensure your semi is Ready for the Road Ahead™ with safe and reliable stopping power, with the HD Value 12-1/4" x 4" 10K Heavy Duty LH Electric Brake. To quickly bring trailers to a stop, this replacement brake allows operators to remotely control the brakes on trailers by sending an immediate electronic signal. Fashioned with an easy-to-install and adjustable design to rapidly resolve problems within a trailer's parking mechanism. FleetPride is your First Click in Heavy Duty®.