This bronze thru-hull mount transducer performs well at high speeds. An excellent choice for fiberglass and wood hulls, this 8-pin 600W narrow stem transducer has a depth of 800' - 1,200'; an operating frequency of 50 - 200 kHz; a beamwidth of 45° to 12°; and a 0° to 7° deadrise. Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat.Do not use on metal hulls.