Raymarine Pack of RVM-420 RealVision 3D Stainless Steel Thru-Hull Transducers, Port and Starboard 20-Degree, Direct Connect to Axiom2 and RVM1600 (2 X 2M, Y-Cable and 8M Extension Cable)The RVM 420 is a port and starboard transducer pair designed for boats with 15? to 25? of deadrise. Each transducer element is tilted at 20? to compensate for the hull deadrise. The RVM 412 and RVM 420 transducer pairs feature titled offset sonar elements inside their surface mount housings. The tilted elements ensure the sonar's beam patterns are correctly aligned for maximum performance while eliminating the drag and turbulence associated with a