30mm 50mm 75mm 120mm 127mm Diameter Optical Glass Focal Length Optics Double Convex Lens Magnifiying Glass 3x ~5x Magnifier Lens

 
Material: Optical Glass

Lens Diameter: 120mm   Focal Length: 120mm
Thickness of Centre:33mm
Edge Thickness: 8mm
Magnification:3x
Lens Diameter:127mm
Magnification: 5x
Center Thickness: about 25~26mm.
Focal Length: 80mm
It can be used on PDOK Desktop Magnifier PD-032C, Clip-on Magnifier PD-032A and PD-032B.
Lens Diameter:75mm   Focal Length: 200mm
Lens Diameter:50mm  Focal Length: 90mm
Lens Diameter:30mm  Focal Length: 65mm