Specs needed for rear wheel inner spacers

[Dieselchanic]

I need the specs for the spacers that go inside the rear wheel, between the bearings, on my '81. Here is a parts breakdown (thanks 5twins). I'm refering to parts 7,8, and 20.

Unless someone has some they"ll sell and save me the trouble of turning new ones

 

[weekendrider]

650 Central used to stock part #20. The only place that does as far as I know.