Specialty Archery X-Focus 365 GH Lens 1.750 in. 6XFull anti reflective coated optics coating featuring hydrophobic properties to shed water. This lens has been developed and designed using very sophisticated design elements that are used in astronomy and binocular production. A completely new scientific and technical approach nothing like what has been presented before by any other scope lens company. It is task specific and designed for tournament or hunting equipment for archery. From the material