HDI UMS COMBO 9" ARM + POLE ADAPTER + MULTI USE PLATE (HDUMS-MUP-9A)The HD UMS Combo is designed for the hardcore angler that is looking for flexibility while still maintaining strength and functionality. Solid aluminum components and stainless hardware allow trolling speeds up to 8mph! Proprietary designed sliding channels mixed with a locking pin prevent the pole from moving while trolling. With a simple twist of the knob the pole can be securely stowed at any angle while remaining ALWAYS CONNECTED. HDI 6" or 9"