Versatile aluminum adapter allows attachment of either porro-prism or roof-prism binoculars to a tripod. Holds binoculars of 80mm or smaller aperture on a tripod or binocular mount for long viewing sessions. Threaded adapter 1/4"-20 socket fits standard photographic and field tripod heads. Adapter height is 4.25". Slim design works with a wide variety of binocular housings