Brocraft Telescopic Portable Transducer Bracket + Universal Fishfinder Mount Portable Transducer Bracket,Quick removal from boat Construction by marine grade 6061-T6 aluminum with CNC processing Large clamp Max. opening 2-3/4 ", Telescopic extension 31" --51" Simple depth adjustment provides low- and high-speed readings 360 adjustable swivel Universal Fishfinder mount , it can be adapted to most fishfinder brands including Lowrance, Eagle, Humminbird and Garmin