Plastic thru-hull transducers are an economical alternative to bronze and work with thinner hulls such as aluminum. Internal steel sleeve provides extra reinforcement. Not for Trailered boats. Professional installation recommended. 30 ft cable and hardware included. This model will work with Matrix 10, 15, 17, 20, 25, 27, 55, 65, 67, 77c, 87c, 97; Piranha 1**, 2**, 3*, 4*, 5*; PiranhaMAX 210*, 215*, 220*, 230pt*; Fishfinder 515, 525, 535, 565, 580, 585c, 595c; 931c, 937c; 323, 343c, 363, 383c; 717, 727, 747c, 757c, 767, 777c, 787c; 917c