This plastic transom mount can be used to replace the dual frequency transducers included with many Garmin units. The 500 W 8-pin transducer has a maximum depth of 1,500′; an operating frequency of 50 to 200 kHz; a beam width of 40 to 10 degrees; and mounts on a 0? to 70? transom. Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat. When using with a 6-pin Garmin sounder, transducer adapter cable part number 010-11612-00 is required. The 6-pin transducer is preferred. The cable length for this transom mount is 30′.