Garmin GT23M-TH — Stainless Steel, Thru-Hull Mount Transducer, Mid-Band CHIRP (80-160 kHz, 600 W)/CHIRP DownVü (260/455 kHz, 500 W) (8-pin) Model: 010-012404-10 UPC: 753759148607 GT23M-TH transducer is perfect for coastal and offshore fishermen who want...