Airmar B60 Bronze Thru-Hull Transducer w/Humminbird #9 Plug - 7-Pin - 20 [B60-20-HB]B60 Bronze Thru Hull Transducer w Humminbird #9 Plug 7 Pin 20 The bronze B60 20 provides a vertical beam without a fairing. Inside the housing, the ceramic element is tilted for built in, deadrise compensation. The resulting vertical beam gives excellent echo returns for more accurate depth readings. The nearly flush housing minimizes drag with only 5 mm (3 16") extending outside of the hull. Features: Engineered for center console and trailered boats