The Opticron Universal Tele-Adapter UTA 2x is a versatile accessory designed to double the magnification of your Opticron binoculars or telescope and eyepiece setup. When attached to a binocular, it transforms one side into a high-powered monocular with long eye relief, making it ideal for detailed observation. The UTA 2x is compatible with various Opticron eyepiece models, including SDL, HDF, HR, and IS. It is sold as the main body only, with separate screw-on connection rings available to fit different eyepiece diameters.