Bat10

You can see our bored out Amp #4 terminals for a perfect fit for #4CCA aluminium wire and drilled to 6mm, our turned 1/2" OD .075" thick copper alloy 110 H2 hardness washers, and bored out #10 phospher bronze internal tooth star washers to 6MM, all of which are working together to connect fat wire to brass battery post with the supplied 6mm stainless allen head screws.
Y9-01-15