BRQ1392 Dimensions: * SLR Digiscoping, Telescoping arm Camera to Spotting Scope Adaptor. Barska Digiscoping adaptor Is a universal mounting camera to spotting scope mounting adaptor. The extendable telescoping arm allows you to mount small to large cameras to a spoting scopes eyepiece Specifications: Will fit cameras up to 200mm in length: From mounting foot connection to cameras objective lens 200mm and hold up to 3lbs