This is a charger adapter that will alloe you to use an earlier generation Aston Cigar type charger to charge a current model Aston.
This fits onto a standard Aston Martin cigar lighter type charger and then links it to the Magnetic type connector that fits into the DB11,  2019 onwards DBSs,  2020 onwards DBX and 2019 onwards Vantage 4.0L Rear charge socket.