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Aspheric 180mm F/6 Product Name:Aspheric 180mm F/6
Item No.:AS180-6
Description:Clear Aperture 180 mm Focal Length 1080mm with hand figuring on the last surface
Aspheric 203mm F/6 Product Name:Aspheric 203mm F/6
Item No.:AS203-6
Description:Clear Aperture 203 mm Focal Length 1218mm with hand figuring on the last surface