This product is either discontinued or we cannot get that from suppliers.
Brand: Garmin, Model: 010-10272-00, Type: Mount Transducer, Colour: Black, Compatible: Fishfinder 340C / Fishfinder 400C / GPSMAP 298 Sounder / GPSMAP 451s / GPSMAP 551s / GPSMAP 556s / GSD 21 / GSD 22 Digital Remote Sounder.
This plastic transom mount can be used to replace the dual frequency transducers included with many Garmin units. The 500 W 6-pin transducer has a maximum depth of 1,500 ft; an operating frequency of 50 to 200 kHz; a beamwidth of 40 to 10 degrees; and mounts on a 0 to 70 degree transom.