Garmin GT8HW-IH In-Hull Transducer - 8-PinDesigned for bass boats, the Garmin GT8HW IH In Hull Transducer installs inside a fiberglass hull to minimize cavitation and hull drag while delivering precise depth readings at high speeds. In Hull Design: Installs inside a fiberglass hull to reduce cavitation and hull drag for smoother performance at high speeds. CHIRP Range: High wide CHIRP traditional sonar (150240 kHz) for crisp bottom detail, structure, and reliable fish arches. Power Output: