The Power Stop Autospecialty New Brake Shoes are designed to exceed the original equipment manufacturer (O.E.M.) standards and deliver maximum performance to your drum brake assembly. Featuring a semi-metallic composition, that is 100 percent asbestos free, Power stop brake shoes provide increased braking power and a shorter break-in period, that is also chatter and noise free. Each set of brake shoes are precision arc ground for proper fitment to the original equipment specific drum diameter. The backing plate assemblies are manufactured using 100 percent steel with a black coating, allowing the Power Stop brake shoes to resist rust and corrosion build up over time.