Mustang Shelby Cougar One Set of Four 5/16-18 Cage Nuts, These Were Used in the Dash on 67, 68 Mustang Shelby Cougar to Fasten the Park Brake Mechanism to the Dash, They Were Also Used in 24" Radiator Upper Mounting Brackets on 67-70 Mustang, Shelby and Cougar, They Fit in to a 1/2" Square Hole, Panel Range .023-.060, Please Check Out My Other Ford Items for Sale...