Garmin GT21-TM Transom Mount Transducer, Traditional 600W, 50/200kHz, ClearVü CHIRP 500W, 260 & 455kHz Hydration Steel housing mounting holes: 5/16

Steel housing mounting holes: 5/16 x 19/32

short circuit and reverse polarity protection

Fully Velcro lined

Telescopic Mounting Pole included

transfer relay – All in ONE unit

Garmin GT21-TM Transom Mount Transducer, Traditional 600W, 50/200kHz, ClearVü CHIRP 500W, 260 & 455kHz Hydration Steel housing mounting holes: 5/16GT21 TM Transom Mount Transducer, Traditional 600W, 50 200kHz, ClearV CHIRP 500W, 260 & 455kHz Perfect for coastal and offshore fishermen who want traditional sonar and CHIRP ClearV scanning sonar. This transom mount transducer consistently displays clear and crisp fish arches with superior target separation as well as clear definition of structure below the boat. The CHIRP ClearV element has a power rating of 500W and operating frequencies of 260 455