The Furuno 520-IHC Transducer is a Plastic In-Hull (Shoot thru the Hull) Transducer for Fiberglass boats. It is a dual frequency (50/200 Khz) transducer with a 45 degree cone angle on the 50 Khz frequency and a 15 degree cone angle on the 200 Khz frequency. It comes with 30 feet of cable with an 8 pin connector.