Quick Overview 100% copper free Precision cam ground for exact fitment Secondary post cure for fast break in 100% asbestos free Chamfers to assure noise-free braking Autospecialty brake shoes are engineered to satisfy the most demanding professional installers. The semi-metallic brake shoes are post cured for more brake power and shorter break-in time. The shoes are precision arc ground for proper fitment to the drum. All shoes are 100% asbestos free. Our shoes feature chamfers to assure noise free braking, without chatter. Made from 100% new Steel that is black coated to resist rust.