"The Lowrance Transducer Kayak Scupper Mount is the ultimate transducer mounting system for the sit-on-top fishing kayak. Perfect for all HDS, Elite, Mark and X-Series Lowrance Skimmer transducers, both 83/200kHz and 455/800kHz DownScan Imaging models, as well as earlier 1"" 200kHz transducers. Installation is easy using almost any scupper opening without messy adhesives. The Lowrance Scupper Mount positions the Skimmer transducer so it is totally submerged in the water, ensuring maximum sonar signal return sensitivity and producing the absolute clearest possible underwater returns of structure and fish. Transducer not included.Manufacturer model #: 000-10606-001. Ideal for all HDS, Elite, Mark and X-Series Lowrance Skimmer transducers Easy installation Use most any scupper opening without messy adhesives NOTE: Not for 50/200kHz Skimmer transducers."