This item is a OE style replacement Set of 2 Rear Brake Drums & 4 , 1 Set of Dash4 rear brake shoes & Springs Compatible with the following:1987-1990 Bonneville1987-1990 Oldsmobile 981990 Fleetwood 1987-1990 Buick ElectraINCLUDES: 4pc2x PART # 11-8939 Steel Rear Brake Drums 225 MM 8 55/64 " Dia. X 1 49/64 " Width 5 Lug Drums ( Steel Drums will replace Aluminum Style )1x PART # NB564 New Rear Shoe Set , 4 rear brake shoes1x PART # 7270 118.62023 H7270 New Rear Brake shoe springs both sides