B260 Depth and Temperature Through Hull Bronze Transducer. Compatible hull material: fiberglass and wood. Max Power: 1000 watts. Frequency: 200/50 kHz Cable: 30ft (9.1m) cable with connector for connection to CP370, CP300, DSM30, DSM300. Fits vessels with hull deadrise of 0 to 20 degrees. Includes high speed fairing. Hole diameter for installation: 1 5/16 inch.