141 Kayak/SUP Transducer Mounting Arm w/438 Gear-Head Kayak/Sup Transducer Mounting Arm made of high strength composite material that will give you years of service - withoutany corrosion problems. Also included is the 415 Slip Discs that offer micro adjustments when needed. The Scotty Transducer mount telescopes from a compact 11.5' to 18' when fully extended and swivel 360°. Includes the ever popular Scotty the 141 Track Adapter Mount that will allow you to install one of the Scotty Fishfinder mounts. Warning [https://productimageserver.com/prop65/6pt.png]WARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov [http://P65Warnings.ca.gov].