Nikon Planapo 2/0.10 160/- Cfn Microscope Objective Plan Apo 2x

  
NIKON PLANAPO 2/0.10 160/- CFN MICROSCOPE OBJECTIVE - PLAN APO 2X. Nikon PlanApo 2x/0.10 160/- CFN microscope objective lens.

It has a 20mm RMS thread.