The Nikon Monarch Binocular Tripod Adaptor allows you to easily mount your Monarch, Action, and Action Extreme binoculars, and any other binocular with a 1/4"-20 threaded socket, onto a photo/video/field tripod for hands-free use. The base of the adapter has a 1/4"-20 mount to be compatible with a wide variety of support systems. Using your binoculars, especially high-power ones, or those with large objective lenses helps to steady the view, reduce vibrations, and eliminate arm fatigue.