This is a 12 pack of door trim clips retainer for the 1962-90 era GM vehicles where pin or small wire spring clips go into the door shell plugs.. these are the plugs.
Suits:
67-72 Buick GS
75-79 Buick Skylark
67-81 Camaro
67-81 Firebird
65-79 Chevy II & Nova
70-74 Chevy Full size Impala etc
67-72 Olds Cutlass
67-72 Pontiac LeMans, GTO, Tempest