Index: CR39 1.61 1.67  

Diameter: 73mm 75mm 80mm  

Base: 200Base 400Base 600Base 800Base

Center Thickness: 2.00mm 2.20mm    

Coating: UC/HC/HMC(AR)/REVO(MIRROR)    

Color: Grey, Brown, Green, Yellow, Pink, Purple, Blue, Red, Orange, etc.