ND: 1.56 Progressive photo chromin lens

  1.56 Progressive Finished/Semi-Finished Reflective index: 1.56 Remark: Aspheric Abbe Value: 38 Diameter：75mm 70mm Corridor：9mm,11mm,12mm 14mm ADD: 0.75-3.50 • BASE: 1.00B, 2.00B, 4.00B, 5.00B 6.00B