TEK Pro+ 7558-D679 Severe Duty Brake Pad Set; Front Innovative, durable friction formulations engineered for outstanding performance under high heat and heavy loads NOW with MST Constrained layer vulcanized rubber shims 'molded in" for superior noise suppression Caliper abutment kits and brake hardware included to ensure premium performance Slots and Chamfers enhance quiet operation Made in U.S.A.