You are buying two (2) NORS Auveco bumpers. They are hood bumpers for 1966-1968 Pontiac GTO, LeMans and Tempest. They have a 5/16-18 x 1-1/2" long threaded stud with a stainless steel serrated flange nut (the nuts are new stock).

 You must compare your application to the photos and the sizes that we have provided.