AIRMAR Tilted Element B75C 600 W 80 to 130 kHz Medium Bronze Fixed 0 deg Tilted Chirp-Ready Through-Hull Depth and Temperature Transducer GARMIN 8 PIN | B75C-0-M-8G – CED Marine
Garmin Airmar 509LHW 3kW 28 to 60kHz & 150 to 250kHz Thru-Hull Transducer