Garmin B275LH-W Bronze Thru-Hull Transducer - 12-Pin [010-12183-20]B275LH W Bronze Thru Hull Transducer 12 Pin Get more coverage under your boat with Airmars unique wide beam, high frequency Chirp ready transducers. The high band operates across a frequency range of 150 to 250 kHz and has a fixed 25 beam for all frequencies. The high frequency band results in superior resolution. The constant wide beamwidth provides twice the coverage under the boat and excellent fish arches on the display compared to most high