These thru-hull transducers works with the StructureScan® 3D module (sold separately) to create a high resolution, three dimensional view of underwater terrain and fish-holding structure. Immediately see where fish and structure are located in relation to your boat, with a picture-like view you can easily pan, tilt, and rotate for the perfect perspective. Separate port and starboard transducers deliver optimal coverage for hulls with a steep or dynamic deadrise. The stainless steel transducers can be mounted flat, or with the included fairing blocks.