1.56 photochromic lenses (1.56 photochromic lenses )
Category: Optical/Eyeglass Frames
1) Product Name: 1.56 photochromic lenses
2) Material: NK-55
3) Refraction Index Nd= 1.56
4) Abbe Value: 38
5) Specific Gravity: 1.28
6) Diameter: 55,60,65,70,72,75mm
7) Coating: H ...