Prepare your semi to be Ready for the Road Ahead™, with the HD Value 12-1/4" x 3-3/8" 8K RH Self-Adjusting Electric Brake that offers safe and reliable stopping power. By utilizing a specialized design, this replacement brake makes it possible for operators to remotely control the brakes on trailers by sending an immediate electronic signal. Built 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®.