Description Reviews NO. 140 KAYAK / SUP TRANSDUCER ARM MOUNT FOR POST MOUNTS PRODUCT OVERVIEW: Kayak/SUP Transducer Mounting Arm made of high strength composite material that will give you years of service without any corrosion Designed for kayaks and small boat use Transducer Arm telescopes from a compact 11.5 inches to 18 inches when fully extended and swivel 360 degrees Includes the No. 241L Locking Combination Side/Deck Mount and Scotty Post (which fits into any Scotty Rod Holder Mount) This fully adjustable design includes the No. 415 Slip Discs that offer infinite micro position changes