You are buying (1) NORS Auveco fastener. It is a general purpose (universal) steel push-in moulding clip that can be used on various models & years of Buick, Cadillac, Chevrolet, Oldsmobile, Pontiac & GMC vehicles that have 3/4" to 1" wide deep mouldings. Please note photos above with clip installed in a 1" wide moulding. These clips have 1.200" long plate and push into a 5/16" or 3/8" diameter hole and have a foam sealer. They have an extra tab on the top of the plate (see photos) to hold the clip secure in deep mouldings. This tab can be cut off if not needed. 

PLEASE NOTE that these general purpose (universal) clips are NOT for any specific mouldings and may not be for some of the compatibility applications listed as we do not have all the body codes. You must compare your application to the sizes and the photos that we have provided.