Pair Pico binding post grounding boxes. Provides RFI and acoustic ground for speaker binding posts. Each box fitted with pair dual connection binding posts and set supplied with 4 leads with spades one end bananas other.
These are the 'Gunmetal anodized black/silverline braiding on cables' version.

I'm the original owner.

Retail Price: £920
Asking Price: The Equivalent to £550 in USD (~$650)

Shipping with EMS Worldwide from Israel.
Paypal please add 4.4%-5.4% depends on the buyer location.
I can also accept Wise, which has lower fees than Paypal.