For boats with steep or variable hull deadrise angles. Twin thru-hull stainless steel transducers for StructureScan HD Sonar Imaging provide more range and greater resolution. The kit includes the required Y-cable. See to both sides and straight down: As with transom-mount LSS-2 StructureScan HD transducers, the thru-hull stainless steel versions deliver extreme target detail, bottom discrimination and bait and game fish separation at depths to 300 ft and a wider range of 600 ft side-to-side coverage. Enhanced dual-frequency array: All StructureScan HD transducers are packed with an enhanced dual-frequency element array that operates at 455 and 800kHz. These sturdy, Airmar stainless steel transducers are resistant to the electrical forces in the environment where it will be used. Each features a low-profile design that minimizes drag; provide exclusive three-channel beam, port and starboard SideScan plus DownScan Imaging technology. Includes a high-performance fairing block that will give you Structure performance at speeds up to 35mph and feature a 30 ft transducer cable.