The Standard Mounting Screw for Far-Sight from Farpoint attaches to Porro prism binoculars, allowing quick mounting to the Far-Sight binocular mounting system. The mounting screw has an attachment stud that integrates with the Celestron SkyScout and T&T Parallelogram mount as well. For observers with more than one set of binoculars, this accessory will help save time in the field by not having to switch the mounting screw each time you use a different set of glass.