Garmin GNX Wired Sail Pack 43 [010-01248-60]GNX Wired Sail Pack 43 Update Your Sailboats Electronics with 43 mm Transducers Includes GNX Wind and GNX 20 marine instruments, gWind Wired transducer plus GDT 43 and GST 43 transducers with 43 mm fittings and adapters for NMEA 2000 network sharing GNX Wind and GNX 20 instruments have highly visible glass bonded monochrome LCD displays gWind transducer features twin fin technology for True Wind Angle (TWA); 3 bladed propeller provides accurate wind