Nikon Binocular Tripod Adapter for Nikon Porro Prism binoculars
Nikon Tripod Adapter For Action Series: Amazon.co.uk: Electronics & Photo
Binoculars Tripod Adapter, Black Anti-shake Metal Binocular Adapter Mount Tripods Bracket 1/4 Inch Thread For Binocular Telescope: Amazon.co.uk: Electronics & Photo