1、This is a lens ring adapter, working diameter 40mm 50mm,
2、Applicable 120X 180X 300X working diameter 50mm Monocular
Description
Model: Video C Mount Microscope Camera Monocular Lens Ring Adapter
Inner diameter: 50 mm 42 mm
Outside Diameter: 50 mm 58 mm
Working diameter: 50 mm 40 mm
Material: aluminum alloy
Package Including:
1 x 40mm 50mm Ring Adapter