6" ARM FOR 1.5" BALL HDI UMS SYSTEM HDI UMS 6" Arm for 1.5" Ball is built for anglers who don’t mess around. Machined from solid billet aluminum, it’s a rock-solid, no-flex foundation made to hold on strong. At the core is our proprietary, patent-pending locking pin system, designed to lock your pole in place and eliminate movement while trolling—no slipping, no drifting, just control when it matters most. A cross-hatched socket pattern with increased surface area delivers superior gripping power, so once you set it, it stays locked in—no matter how hard you’re pushing your gear. Finished with a precision ball-and-socket design, the HDI 6" Arm gives you full adjustability without sacrificing strength—making it one of the toughest, most dependable arms on the market. When you're chasing giants, lock it down with HDI UMS 6" Arm. ONLY ARM INCLUDED*
