Raybestos Truck & Medium Duty Specialty Disc Brake Pads provide superior brake performance for Classes 1 through Class 8 truck, medium-duty, and air disc vehicles. Developed for everyday, heavy-use situations, best-in-box formulations specific to each application provide outstanding stopping power over a wide range of vehicle loads and brake temperatures. Specially formulated semi-metallic friction materials, mechanically attached to the backing plate, improve shear strength on large puck assemblies and reduce pad end lift and noise.