FEATURES: Safely replace brake shoes on heavy-duty tractors and trailers Makes installing Q shoes a breeze Perfect tool for brake springs than using pliers and prybars. Works best for drive and trailer shoes. A MUST HAVE for heavy duty diesel truck repair shops. DESCRIPTIONS: 5081 S-Cam Air Brake Spring Tool Alt. for Heavy Duty Tractors Trailers Diesel Drive Semi-Truck Works great on tractor and trailer brakes, ANY heavy duty brakes! This tool makes install spring on the S Cam Air Brake a snap. No more using vise grip and screwdriver to remove brake shoes. APPLICATION: .