where can i find jumpers pure copper?

i need jumpers to my speakers .they need to be with
pure copper.
thank you.
Mapleshade Omega Micro Planar III are the best copper jumpers. Llloyd Walker of Walker TT fame carries the line the last time I looked. Someone here should be able to give you a lead if not.
couple of pennies (not the wwii zinc ones). if you need to increase reach, use the railroad track flattener method.
I have a pair of Transparent Reference jumpers laying around. I have no use for them and you can have them for almost nothing.