Product Details: Prepare your semi to be Ready for the Road Ahead™, with the Meritor 8.5" Air Disc Brake Pad Kit that offers safe and reliable stopping power. Due to its specialized design, this replacement disc brake pad set is able to work alongside the rotor to create friction that rapidly brings vehicles to a stop. Constructed with heat-resistant and durable components to reduce how often the pads need to be changed. FleetPride is your First Click in Heavy Duty®.