Garmin B275LH-W Bronze Thru-Hull Transducer - 12-PinThe Garmin B275LH W Bronze Thru Hull Transducer is a CHIRP ready bronze through hull sonar sensor designed for boats 25' and larger. It delivers broad coverage, fast readings, and reliable depth detail for inshore and pelagic fishing, with a 12 pin interface for seamless Garmin networking. Through hull bronze housing: Bronze thru hull design with a high performance fairing that enhances broadband performance at speeds over 30 knots (34 mph); suitable