"Full Description:\nThe HD Innovations UMS Pole Adapter with Double Side Arm and UMS 1.5" Ball Multi-Use Plate is an expert-driven solution for anglers seeking maximum flexibility and strength on the water. This combo package is constructed from CNC machined-billet aluminum and stainless hardware, providing a solid lockup that handles trolling speeds up to 8 mph. The proprietary Double Side Arm uses ball sockets with crosshatch channels to create a superior gripping surface, while integrated locking pins prevent any unwanted rotation from water force. Highly versatile, the included Multi-Use Plate can be installed into 3-inch tracks, standard bolt patterns, or directly to your boat's gunnel. Whether you are navigating rough conditions or stowing your gear at an angle, this system ensures your front-facing sonar setup remains stable and secure. Enhance your fishing electronics setup with the reliable HD Innovations UMS Pole Adapter with Double Side Arm and UMS 1.5" Ball Multi-Use Plate. \n \nIncludes: \nHDI UMS Pole Adapter (HDUMS-PA) with a single anti-rotation pin. \nHDI Double Side Arm (HDUMS). \nHDI UMS Multi-Use Plate with 1.5" Ball (HDUMS-MUP) with 3" track compatibility. \n \n\nFeatures:\n\u003cul>\n\u003cli>Superior Gripping Force: The proprietary Double Side Arm features ball sockets with crosshatch channels to provide a larger surface area for a secure lockup.\u003c/li>\n\u003cli>Anti-Rotation Design: Locking pins prevent the side arm from rotating due to water force while the boat is in motion.\u003c/li>\n\u003cli>High-Speed Functionality: Durable aluminum components and stainless hardware allow for reliable performance at trolling speeds up to 8 mph.\u003c/li>\n\u003cli>Versatile Mounting: The Multi-Use Plate fits into 3-inch mounting tracks, standard 4-bolt rod holder patterns, or can be mounted directly to the gunnel.\u003c/li>\n\u003cli>Flexible Storage: Securely stow your transducer pole at any angle while it remains connected to the UMS Pole Adapter.\u003c/li>\n\u003c/ul>\n\nSpecifications:\n\u003cul>\n\u003cli>Warranty does not include damages due to transducer pole contacting objects above or below the water.\u003c/li>\n\u003cli>Compatibility: Fits all HDI poles and any pole with a 1.125-inch diameter\u003c/li>\n\u003cli>Mounting Type: 3 in. track, 4-bolt pattern, or direct gunnel mount\u003c/li>\n\u003cli>Material: CNC machined-billet aluminum and stainless hardware\u003c/li>\n\u003cli>Combo Package 6 Inch UPC: 659859153070\u003c/li>\n\u003cli>Combo Package 9 Inch UPC: 659859036328\u003c/li>\n\u003cli>3" Mounting Track is sold separately\u003c/li>\n\u003cli>Transducer Pole is sold separately.\u003c/li>\n\u003cli>Combo Package Part #: HDUMS-MUP\u003c/li>\n\u003cli>Ball Size: 1.5 in.\u003c/li>\n\u003cli>Max Speed: 8 mph\u003c/li>\n\u003c/ul>\n"