Xproutdoor Kayak/SUP Transducer Mounting Arm is designed for kayak and small boat anglers needing to install transducers and fhishfinder for transport easily. Made of High strength composite material which is anti-corrosion for durable long-life use. Universal fish finder base is 360 degrees swivels, and transducer mounting arm is extendable from 11.02 inches /28 cm to 15.75 inches/40 cm. Suitable for almost all brands' fish finder. And perfect for kayaks, canoes, pontoon, inflatable float boat and small fishing boat.