Extreme Max Mounting Arms Extreme Max Mounting Arm Boat/Fishing Rod Holder for GoPro Camera for GoPro Camera fits most GoPro models in addition to other action cameras with 1/4" mounting threads. With multiple pivot and adjustment points, including a 360° head spin, height adjustment, and two arm pivots, you're able to set you camera for the perfect shot. The universal post fits most fishing rod holder bases. Includes a quick release base for new installations.