... 2. Diameter : 65mm, 60mm, 56mm 3. Finished & Seim-finished 1.70 glass lens 1. Diameter : 65mm2. Finished Power Range SPH. -4 ... .00 SPH. 0.00 ~ +16.00 60mm3. Seim-finished 1.70 Mineral White Lens Base Curve : various4. White / MC coated Registered ... Quality Guarantee ! Always keep the prices at the lowest ! 1.70 glass lens, ptical lens, mineral lens, 1 ...