Humminbird XAP 9 20 Angled Puck Transducer Designed to mount to the inside of your hulls with a greater than 15-degree deadrise Single/dual transducer with 15-foot cable and slow-cure epoxy included Compatible with many PiranhaMax, FF and Matrix series Humminbird sonar systems Hull must be of single-layer, fiberglass construction and be free of trapped air or voids Backed by manufacturer's one-year limited warranty