Acorn style. I think 1.5" lenght? Youwant them on the tall size to properly display in the center cap. Flush with the edge of the rim would be ideal. Mine are a little shorter than that so i probably should have gone 2 or 2.5"
1/2-20 thread, 3/4" socket size
I think I got there off eBay. Nothing special. I can take better pic tonight as this is just a zoomed in and cropped cell phone pic
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