Quick Overview Semi-metallic formula that is post cured for increased braking power and shorter break-in time Precision cam ground for proper fitment to the drum Chamfered to prevent noise and chatter Made from 100% new steel that is coated to resist rust 100% Asbestos-Free and Copper-Free Buick Century 1954-1958; Buick Century Series 60 1940-1942; Buick Electra 1961-1970; Buick Riviera 1963-1970; Buick Roadmaster 1950-1958; Buick Roadmaster Series 70 1946-1949; Buick Special 1950-1958; Buick Super 1950-1958; Pontiac Bonneville 1957-1958; Pontiac Catalina 1957-1958; Pontiac Chieftain 1957-1958; Pontiac Star Chief 1954-1958/Buick Century 1954-1958; Buick Century Series 60 1940-1942; Buick Electra 1959-1961; Buick Invicta 1959-1960; Buick LeSabre 1959-1960; Buick Limited 1958; Buick Roadmaster 1950-1958; Buick Roadmaster Series 70 1946-1949; Buick Special 1950-1958; Buick Super 1950-1958