51 52 53 57 58mm Telescope Cemented Doublet Lens Optical Achromatic Telescope Objective Lens Focal Length 182mm-987mm

Specification

Material: k9 Optical Glass

Diameter: 50,51,52,53,57,58mm

Focal Length: 182mm-987mm optional

Film:Green Film

Package Included:

1pcs*Doublet Lens