The Opticron 2x Universal Tele-Adapter simply fits to a binocular and select spotting scope eyepieces to effectively double the magnification without affecting the eye relief. When used on a binocular, it only doubles the power of one eyepiece. The UTA is offered here as just the body, as different connection rings are required to adapt it to specific binoculars and spotting scope eyepieces, and are available separately. For comfortable use the UTA is outfitted with a long eye relief and twist-up rubber eyecup.