1960 Buick Skylark Napa Echlin Carburetor Jet and seat p/n 2-3509 A12758
Brass is dark due to age. Parts in photo are all new. Look photos over very closely. What you see is what you get. Good for spare parts or use as is. Vintage kit, made in the USA.
As seen in photos. May Fit other various years Models and possible makes.