Garmin AIRMAR® B75M (0° Tilt)This bronze thru hull mount transducer is designed to allow both traditional and spread spectrum scanning when used with a compatible sonar like the GSD 26. A 600 W transducer with 8 pins, it has a depth of 900 ft; an operating frequency of 80 130 kHz; a beamwidth of 24 16 degrees; and a 0 to 7 degree deadrise. Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat.