Features :
Type:Microscope achromatic Objective lens
Magnification: /10X/40X/100X
Mounting size :20.2mm
Standard RMS thread
Material:Precision metal
Tube length : 160mm
standard thickness of cover glass 0.17mm
for Biological microscope

Detailed information :

:Numerical Aperture () 0.1; working distance 18mm
10X: Numerical Aperture () 0.25; working distance 7mm
40X : Numerical Aperture () 0.65;working distance 0.53mm
100X :Numerical Aperture () 1.25 ;working distance 0.13mm