Outfit your semi to be Ready for the Road Ahead™ with smooth disc brake performance, with the Holland RH Disc Brake Caliper Kit. After the brake pedal is pressed, this replacement caliper transmits the hydraulic pressure into brake force, bringing the vehicle to a slow. Constructed with precision standards to house crucial components such as pistons, brake pads, and rotors. FleetPride is your First Click in Heavy Duty®.