The VEO BA-185 ARCA binocular tripod adapter fits onto any tripod quick-release plate or directly into the clamp of an Arca-compatible tripod head. This adapter helps to steady your binoculars for clear, relaxed, hands-free viewing. It works with any roof-prism binocular that has a standard 1/4" thread tripod socket, and on most models, its thin bridge allows you to set your binoculars to the minimum interpupillary distance.