010-01962-00 GARMIN GT21-TM Transom/Trolling Motor Mount 8-Pin Traditional and CHIRP ClearVu TransducerGT21 TM Transom Trolling Motor Mount 8 Pin Traditional and CHIRP ClearVu Transducer For coastal and offshore anglers who want both traditional sonar and 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. Optimized for depth performance and rough conditions.