... : 99.0% 4. DIAMETER:60MM,65MM ,70mm,72mm,75mm 1.SPECIFIC GRAVITY: 1.192. ABBE VALUE: 373.TRANSMISSION: 99.0%4. DIAMETER ... :60MM,70MM,65MM,70MM 75MM Guarantee: 1) 2 year quality guarantee. 2) Muli-coating ( AR) machines are ... . Other Detaileds: 1)Semi-finished lenses are also available. 2) Progressive, flat top/round top/invisible bifocal lens,tinted lens 1.56 OPTICAL LENS