Garmin Accessory Marine Mast Mount GPS12H/73. Garmin designed these Boating & Marine with 2 sizes of straps with elastic bands that stretch to fit any size mast. This Garmin Marine Mast Mount is perfect for power boat or sailboat owners who need a stable platform for their device. Use the tilt and swivel mechanism to easily view your device while in motion and this mount is water-resistant so you can use it worry-free. Tilt and swivel your device for the best viewing experience possible. The easy locking mechanism ensures your device stays put while in motion. Pick up the Garmin GPS Mast Mount for a rugged mounting solution for your valuable device. Specifications for Garmin Marine Mast Mount GPS12H/73: Manufacturer: Garmin Color: Black Package Contents: Garmin Marine Mast Mount GPS12H/73 Garmin 010-11441-10: Accessory Marine Mast Mount GPS12H/73