Prepare your semi to be Ready for the Road Ahead with fast actuation of the disc brakes, with the OTR Remanufactured LH Air Disc Brake Caliper with Expertise Built In. Due to its specialized design, this replacement tool houses the brake pads, assisting in the compression of the disc brakes to slow down or stop a vehicle. Constructed with durable materials to withstand strong amounts of torque while enhancing overall brake performance. FleetPride is your First Click in Heavy Duty.