Garmin GWind Race Replacement Transducer Only. This Garmin gWind Race Twin-fin Transducer features twin-fin technology with 3-bladed propeller for more accurate TWS in lighter air while the twin-fin design gives a more stable TWA. The Garmin gWind Race 3-bladed Propeller Transducer includes a 3.3 feet (1 meter) straight pole to raise the transducer above the mast to remove turbulence errors. Specifications for Garmin gWind Race Transducer Only: Manufacturer: Garmin Color: Black Features of Garmin gWind Race Transducer Only: gWind Race transducer only MFG# 010-12117-30 replacement masthead wind sensor Does not include mounting bracket or cable. Package Contents: Garmin gWind Race Transducer Only gWind Race Documentation Garmin 010-12117-30: GWind Race Replacement Transducer Only