What do these 10 3/16 ID hub caps fit?

[jrblanke]

I have gathered the following information for the 15", 16" and 17.5" wheels:

7 9/16 ID fits 15" AND 16" wheels for 1/2 ton with clips.
8 13/16 ID fits 17.5" wheels for 3/4, 1 ton single wheels with clips.


What do the 10 3/16" wheels fit? are they for 19.5 inch wheels? Here are some pictures I saved from a recent ebay auction:










Here are links to a couple of relevant threads including the 64-66 chrome wheel cap thread, and the wheels an tires for a C20 thread.

http://67-72chevytrucks.com/vboard/s...+3%2F4+ton+c20


http://67-72chevytrucks.com/vboard/s...66+caps&page=2





Thanks,

James