Quick Overview 100% copper free Precision cam ground Secondary post cure Fast break-in Asbestos free 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.