glass lens 1.56 photogrey lens 1.index :1.56 2.material:glass 3.dia:72mm/65mm 4.HC ... 50mm,55mm, 60mm, 65mm, 70mm,75mm4) Uncoated lens, hard coated and Multi-coating,HCT,Super hard5) ... top/round top bifocal, Tinted lens, polarize lens(gray and brown)6) semifinished lens is also available Quality guarantee ... :1 year quality guarantee.Multi coating(AR)lens is produced by Korea coating machines,envelops ...