The Napa Trustop TS564 is a set of brake shoes designed for rear placement on Buick Electra, Park Avenue, and Oldsmobile Delta 88 vehicles. These semi-metallic brake shoes are vintage parts with a quiet operation feature, providing reliable performance. Manufactured in the United States by NAPA, the set includes 4 brake shoes, each with a width of 1.8 inches. Please note that these brake shoes may contain materials known to the State of California to cause cancer and reproductive harm, as indicated by the California Prop 65 Warning label.