Google "battery bus bar", that's where I would start.
That looks like galvanized steel with shrink tube around it, could probably make those if you needed to. Or just a short piece of cable with some 90 degree lugs on one end and 0 degree (straight) lugs on the other.
That looks like galvanized steel with shrink tube around it, could probably make those if you needed to. Or just a short piece of cable with some 90 degree lugs on one end and 0 degree (straight) lugs on the other.