Polaris W40-1FC Wedge Clmp 4/0-2/0 Al.Flex
https://nsiindustries.com/product/polaris-w40-1fc-wedge-clmp-4-0-2-0-al-flex/
These service wedge clamps are used for dead-ending self-supporting drop wire and can be attached to bare neutral in any point in the span gripping ACSR, AAAC or aluminum conductors.