Quick Overview Autospecialty Brake Shoes Power Stop has a reputation for precision and adherence to the strictest OEM standards, which extends to our brake shoe line. The Power Stop Autospecialty brake shoes are made with a semi-metallic formula that is post cured for increased braking power and a shorter break-in time. These shoes are precision cam ground for proper fitment to the drum and chamfered to prevent noise and chatter. Made from new steel that is coated to resist rust. Copper free: 100% copper free formulation. Direct fitment: precision cam ground for exact fitment. Fast break-in: secondary post cured for a faster break-in period. Asbestos free: 100% asbestos free.