This allows you to attach specific Nikon binoculars to any tripod head with a 1/4-20 threaded screw, but will work with any binocular with a central shaft with a maximum diameter of 14mm. Remarkably well balanced. Weighs 0.42 lb (190 g). Note! Tripod adaptor for E Series, Astroluxe and Zoom XL binoculars.