Binger Tripod Adapter for porro binoculars Metal material Tripod Adaptor fits standard thread Fits most binoculars equipped with adapter screws To be used with tripods or window mounts The underside has a rubber pad seated within a countersunk area of the base and its flush so that it will not scratch the tripod attachment surface Handy and Portable, Easy to Take, Can use on the window mount Aluminum alloy Solid and sturdy