The Scotty Transducer Arm Mount has been designed for kayak anglers needing an easy way to instal transducers for transport.This Kayak/SUP Transducer Mounting Arm is made of high strength composite material that will offer you years of service without any corrosion problems.Also included is the Slip Discs that offer micro adjustments when needed.The Scotty Transducer Arm Mount telescopes from a compact 29cm .to 46cm .when fully extended and swivels 360 degrees.Model Year: 2016, Product ID: 430428, Model Number: 0140a, GTIN: 0062017001401