Features:
1. Aluminum Alloy shell is precision machined, stable and durable for long time use.
2. This is a 40X achromatic objective lens for biological microscope.
3. It can eliminate unwanted reflections and increase contrast.
4. Offers high quality observation without additional chromatic aberration, make image more clear.
5. The Length of the objective lens is 37.8mm, easy to use.

Specification:
Item Type: Achromatic Objectives Lens
Material: Aluminum Alloy + Optical Lens
Color: As Pictures Show
Magnification: 40X
Tube Length: 160mm / 6.3inch
Conjugate Distance: 185
Cover-glass Thickness: 0.17mm
Objective Lens Length: 37.8mm
Mounting Size: 20mm（Standard RMS Thread)
Item Size: 5 * 5 * 5cm / 2.0 * 2.0 * 2.0inch
Package Weight: Approx. 62g

Package List:
1 * Achromatic Objectives Lens