This is a set of AC condenser mounts.   Qty 4. 

These go between the condenser and the brackets bolted to the core support.  

Fits many GM applications

1970 to 81.  Chevelles Camaros, Impala, belair, Biscayne Etc. Vega El camino Caprice, Chevette, malibu, monza

Any one with the rubber isolators with a height of 3/4" tall on the rubber