Single/Dual Beam, 20/60 degree, 200/83 kHz. 15' cable. For use in single layer fiberglass hull. Designed to mount to the inside of your hull and transmit the sonar signal through the hull itself. A slow-cure epoxy included. Compatible with many PiranhaMax, FF and Matrix series Humminbird sonar systems. Backed by manufacturer's one-year limited warranty.