... Transimission: over the 87% 4. Density(g/cm3) 1.70 white hi-index glass lens1. Diameter: 65mm2. Abble value 35 ... high quality with low price7. if you are interested in it, feel free to contact with me for detailsBesides, we can ... 1. GLASS LENS (index 1.523, 1.70, uncoated & A/R, size 65/70 mm)2. CR-39 LENS (index 1. ... .61, uncoated, H/C, H/M/C, size: 65/70/72 mm)3. BIFOCAL LENS (glasses & CR-39. round-top ...