Designed for easy and secure attachment of binoculars to a tripod for steady long distance viewing. Stainless steel stem attaches to binocular via standard ¼”-20 thread mounting point. Simply insert and tighten stem back into the tripod adapter for rock solid viewing. Fits any binocular with a standard ¼”-20 thread mount. Adapter base has ¼”-20 threads to mount on tripods.