History kinda like spider caps

Does anybody know what they called those flat chromed plates that covered the rear axle opening on early mags?
I recall they were flat with 5 holes to mount between the wheel and the drum. I'm looking for a couple as my old rear mags have a 3 & 3/4" diameter opening (too large for a cap). Thinking most were used on drag cars, but have no idea of name to search or ask about.

 

Don't know,but maybe you could make them from some stainless

 

tried to do a search on this for current source, no luck - anyone buy new recently?

 

Here you go.......http://www.ebay.com/itm/NOS-Cal-Cus...ash=item28255b727b:g:UKgAAOSwnNBXbFE6&vxp=mtr
KK

 

AKH Wheels sells used center caps for vintage mags:
http://www.akhwheels.com/pages/misc.php?cat=11

Also, Dashman makes flat aluminum center caps like these:
http://dashman.net/category.html?id=9

 

Try this www.lugnutking.com