Entreq Poseidon Earthbox REA
Entreq Everest
On the back of each earthing box there is at least one wood screw with which to screw the earthing cable spade. That wood screw is replaced with Everest.
You can tweak the earthing boxes by adding the metal mixture that in this case Everest has. Everest uses a mixture of 4 metals and has a vital and lively signature.