These are the original push in style belt moulding clips, not the screw on replacement style.
These clips will fit cars with the long thin holes only, they install into the belt moulding and then they snap into the hole in the body.
#20-450 will work on any 1955-1957 classic Chevy 210 2-door sedan.
End clips and screws included as required. Does all 4 mouldings, both sides.