Nappa part number N0E8131509 ----- 2- 1/4" diameter
Nappa part number N0E8151001 ---- 2" diameter
Nappa part number NOE8155008 ---- 2-1/2 " diameter.
I've listed them all in case anyone else reading has a different diameter they need. I've used these on my 1968 Barracuda restoration and they work perfectly, plus, they look as close to factory as anything else I've seen.