Garmin GT17M-THF SS Mid Band Chirp Transducer - 20° - 1kW - 8-PinMeet the Garmin GT17M THF SS Mid Band Chirp Transducer 20 1kW 8 Pin, a high performance, flush mounted sonar solution engineered to reduce drag while delivering crystal clear CHIRP returns for both fishing and cruising boats. With a robust 1 kW through hull design and a 20 tilt, this transducer optimizes beam orientation for precise fish arches, structure, and bottom depth readings on your display. Key Features Mid Band CHIRP Performance: 80165 kHz