Additional mounting base for Pro Mount. Makes it easy to place several bases around the boat or even in another boat. The ProMount Quick Release Bracket makes it possible to easily remove your electronics weighing up to three pounds from a permanently mounted base with one hand. The 360-degree swivel adjustment lets you see the unit from any angle. Will fit nearly all Lowrance, Garmin, Eagle, Hummingbird, Pin-Point and Vexilar electronics. Made in the USA.