Slip Disks Are Included With The Scotty 140 Kayak/Sup Transducer Mounting Arm Scotty #140 Transducer Arm Mount has been designed for kayak anglers needing an easy way to install 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 11.5 in. to 18 in. when fully extended and swivels 360 degrees. Scotty manufactures products that are sold into the fishing, marine, and outdoor industries worldwide. We have all the gear from Pot Pullers, manual and electric Downriggers, Rod Holders, Oar Locks, Fishfinder, Rod, and Float Tube Mounts, to Safety Equipment for your boat, kayak, and stand up paddle board. When it comes to on the water safety, Scotty has got you covered! Scotty safety equipment ranges from Rescue Throw Bags, Whistles, Flashlights, and Sea-Lights. We have total commitment to quality, and unmatched service. That means our customers everywhere can expect reliability and satisfaction from every product that carries the Scotty name. With Scotty you will find the right Downrigger, Mounting System and Accessories to suit your fishing, boating, kayaking and stand up paddle board needs. Designed for kayak and SUP anglers needing an easy way to install transducers for Transport Includes 415 slip disc that offers micro adjustments when needed Swivels 360 degrees The Package Weight Of The Product Is 3 Pounds