- Material:CR-39 PPG
- Refraction Index Nd:1.49
- Diameter:70/28mm
- Abbe Value:58
- Specific Gravity:1.32
Product Infomation
High scratch resistance
New design, slim and thin
HC, HMC coating available
Tintable to various fashionable colors
Semi-finished or finished are available
New design, slim and thin
HC, HMC coating available
Tintable to various fashionable colors
Semi-finished or finished are available