Sumiko Dynaudio OCOS speaker cable connectors

I am primarily looking for the crimp-on connectors that go on the coax cable. I have several lengths that are just way too long, like twenty feet when I need eight. So I am looking to purchase at least 8 crimp-on ends... and potentially, although less important, 8 speaker adapters also. And anyone out there have the RFC (black) adapters?

Thanks for your help!