What are small gold colored "caps" that came in bag with perfect path products?


I recently upgraded my Pre/amp/CD player and cables so I'm just now getting around to evaluating some perfect path products I bought.  In the bag with alpha e cards and thing you plug into outlets are several small gold colored objects looks like a cap to something, but it is not obvious what.  Anyone know what these are ?

Thanks for your time.
berner99
Thanks mc for posting links to my products as it looks kind of tacky if I do it. Pretty cool. I’m giving serious consideration to putting you on the payroll. Maybe as junior shill. As usual everything’s topsy turvy, me topsy, you turvy.

http://www.machinadynamica.com/machina39.htm
"is anyone suggesting something other than RFI/EMI rejection is going on here?"

Yes because they are:

"...treated with some of their magic type stuff."

Well, actually Graphene is an excellent RFI shield and many of their products contain Graphene. Gold could be simply cosmetic or used to distinguish their caps from all the other similar RCA caps that have been around since Gandhi was a Boy Scout, e.g., Cardas Caps.