[Universal Compatibility] Fits 95% of professional biological microscopes with standard rms size interface.
[ and Clear Image] Lens coated for high transmittance and refractive index, provides bright and clear images.
[Versatile Usage] 40X high magnification objective ideal for study, work, or research, offering practical assistance.
[Automatic Rebound Feature] Spring device prevents lens damage by rebounding when encountering cover glass.
[sturdy Brass Material] Fine workmanship, sturdy, and chrome-plated for longevity.

Spec:

Item Type: Achromatic Microscope Objective
Model: 40/0.65
Material: Brass
Use: Microscope accessories
Interface Size: Approx. 20.2mm / 0.8in (international standard RMS size)
Numerical Hole Diameter: 0.65mm
Cover Glass Applicable Thickness: 0.17mm
Microscope Applicable Mechanical Tube Length: Approx. 160mm / 6.3in
Working Distance: Approx. 18mm / 0.71in
Common Rail Distance: Approx. 195mm / 7.68in
Parfocal Distance: Approx. 45mm / 1.77in
Spring: Yes(automatic rebound)

Package List:
1 x Lens
1 x Storage Box

How To Use:
1. Can be used after connecting with the microscope.
2. In order to facilitate observation, it is recommended to start observation at low magnification. It is more difficult to adjust at high magnification than at low magnification. According to the characteristics of the observed specimen, not all are suitable for observation under high magnification.