Made specifically for the Nikon Premier SE and Nikon Astronomy Series binoculars this Tripod Adapter will attach to any standard tripod head with 1/4 inch -20 threaded screw. Versatile compatibility: Fits Nikon Premier SE and Nikon Astronomy series binoculars to any standard tripod. Smooth Viewing: Allows for stable rock-steady views in high winds or for long hours spent glassing. A must-have for high power binoculars