Bronze Thru-Hull Triducer with High Speed fairing block. The Garmin Bronze Thru-Hull, style B744 V, 600w, multisensor provides accurate depth, speed and temp readings and comes with a High Speed Fairing Block. The high speed fairing block provides a streamlined installation and allows for a vertical beam.
Compatible with Garmin GSD20, GSD21, GSD22,GPSMAP 178C/250/250C/ GPSMAP 298C/100 Blue/160 Blue/240 Blue/188/188C/320C/498/398/198C/340C/250/250C/238 /235/400c/ 440S/441S/430S/431S/540S/530S/541S/531S/545S/ 535S/546S/536S. Garmin PN 010-10183-02.