You are buying ten (10) NORS Auveco fasteners. They are quarter panel extension; rear tail light surround panel nuts for 1968-1974 Dodge & Plymouth (see compatibility). These nuts hold the extension panels to the quarter panels. These nuts are 1/4-20 and have a 1" diameter flange with mastic sealer. Please note that the red color on the nuts is NOT rust. It is a compound put on the sealer by the manufacturer.

Please check your application to make sure the 1" diameter flange will fit your vehicle.